Merged heads.
--- a/conditionals.rst Tue Oct 12 17:15:11 2010 +0530
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,176 +0,0 @@
-Hello friends. Welcome to this spoken tutorial on Getting started with
-strings.
-
-{{{ Show the slide containing the title }}}
-
-{{{ Show the slide containing the outline }}}
-
-In this tutorial, we will learn the basic conditional constructs
-available in Python. We learn the if/else, if/elif/else and ternary
-conditional constructs available in Python.
-
-{{{ Shift to terminal and start ipython }}}
-
-To begin with let us start ipython, by typing::
-
- ipython
-
-on the terminal
-
-Whenever we have two possible states that can occur depending on a
-whether a certain condition we can use if/else construct in
-Python. Say for example we have a variable "a" which stores integers
-and we are required to find out whether the value of the variable "a"
-is an even number or an odd number. To test out conditional statements
-as an example, let us say the value of the variable "a" is 5::
-
- a = 5
-
-In such a case we can write the if/else block as::
-
- if a % 2 == 0:
- print "Even"
- else:
- print "Odd"
-
-When the value of the variable "a" is divided by 2 and the remainder
-is 0 i.e. the result of the operation "a modulo 2" is 0 the condition
-"a % 2 == 0" evaluates to True, so the code within the if block gets
-executed. This means that the value of "a" is Even.
-
-If the operation "a modulo 2" is not 0 the condition "a % 2 == 0"
-evaluates to False and hence the code block within else gets executed
-which means that the value of "a" is Odd.
-
-Note in such a case only one of the two blocks get executed depending
-on whether the condition is True or False.
-
-There is a very important sytactic element to understand here. All the
-statements which are inside a certain code block are indented by 4
-spaces. The statement which starts a new code block after it, i.e. the
-if statement in this example ends with a colon (:). So the next
-immediate line will be inside the if block and hence indented by 4
-spaces. To come out of the code block we have to come back to the
-previous indentation level as shown in the else line here. Again the
-line following else will be in a new block so else line ends with a
-colon and the following block of code is indented by 4.
-
-As we use if/else statement when we have a condition which can take
-one of the two states, we may have conditions which can take more than
-two states. In such a scenario Python provides if/elif/else
-statements. Let us take an example. We have a variable "a" which holds
-integer values. We need to print "positive" if the value of a is
-positive, "negative" if it is negative and "zero" if the value of the
-variable "a" is 0. Let us use if/elif/else ladder for it. For the
-purposes of testing our code let us assume that the value of a is -3::
-
- a = -3
-
- if a > 0:
- print "positive"
- elif a < 0:
- print "negative"
- else:
- print "zero"
-
-This if/elif/else ladder is self explanatory. All the syntax and rules
-as said for if/else statements hold. The only addition here is the
-elif statement which can have another condition of its own.
-
-Here, exactly one block of code is executed and that block of code
-corresponds to the condition which first evaluates to True. Even if
-there is a situation where multiple conditions evaluate to True all
-the subsequent conditions other than the first one which evaluates to
-True are neglected. Consequently, the else block gets executed if and
-only if all the conditions evaluate to False.
-
-Also, the else block in both if/else statement and if/elif/else is
-optional. We can have a single if statement or just if/elif statements
-without having else block at all. Also, there can be any number of
-elif's within an if/elif/else ladder. For example
-
-{{{ Show slide for this }}}
-
- if user == 'admin':
- # Do admin operations
- elif user == 'moderator':
- # Do moderator operations
- elif user == 'client':
- # Do customer operations
-
-{{{ end of slide switch to ipython }}}
-
-is completely valid. Note that there are multiple elif blocks and there
-is no else block.
-
-In addition to these conditional statements, Python provides a very
-convenient ternary conditional operator. Let us take the following
-example where we read the marks data from a data file which is
-obtained as a string as we read a file. The marks can be in the range
-of 0 to 100 or 'AA' if the student is absent. In such a case to obtain
-the marks as an integer we can use the ternary conditional
-operator. Let us say the string score is stored in score_str
-variable::
-
- score_str = 'AA'
-
-Now let us use the ternary conditional operator::
-
- score = int(score_str) if score_str != 'AA' else 0
-
-This is just the if/else statement block which written in a more
-convenient form and is very helpful when we have only one statement
-for each block. This conditional statement effectively means as we
-would have exactly specified in the English language which will be
-like score is integer of score_str is score_str is not 'AA' otherwise
-it is 0. This means that we make the scores of the students who were
-absent for the exam 0.
-
-Moving on, there are certain situations where we will have to no
-operations or statements within the block of code. For example, we
-have a code where we are waiting for the keyboard input. If the user
-enters "s" as the input we would perform some operation nothing
-otherwise. In such cases "pass" statement comes very handy::
-
- a = raw_input("Enter 'c' to calculate and exit, 'd' to display the existing
- results exit and 'x' to exit and any other key to continue: ")
-
- if a == 'c':
- # Calculate the marks and exit
- elif a == 'd':
- # Display the results and exit
- elif a == 'x':
- # Exit the program
- else:
- pass
-
-In this case "pass" statement acts as a place holder for the block of
-code. It is equivalent to a null operation. It literally does
-nothing. So "pass" statement can be used as a null operation
-statement, or it can used as a place holder when the actual code
-implementation for a particular block of code is not known yet but has
-to be filled up later.
-
-{{{ Show summary slide }}}
-
-This brings us to the end of the tutorial session on conditional
-statements in Python. In this tutorial session we learnt
-
- * What are conditional statements
- * if/else statement
- * if/elif/else statement
- * Ternary conditional statement - C if X else Y
- * and the "pass" statement
-
-{{{ Show the "sponsored by FOSSEE" slide }}}
-
-This tutorial was created as a part of FOSSEE project, NME ICT, MHRD India
-
-Hope you have enjoyed and found it useful.
-Thankyou
-
-.. Author : Madhu
- Internal Reviewer 1 : [potential reviewer: Puneeth]
- Internal Reviewer 2 : [potential reviewer: Anoop]
- External Reviewer :
-
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/conditionals/questions.rst Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,79 @@
+Objective Questions
+-------------------
+
+.. A mininum of 8 questions here (along with answers)
+
+1. Given a variable ``time``, print ``Good Morning`` if it is less
+ than 12, otherwise ``Hello``.
+
+ Answer::
+
+ if time < 12:
+ print "Good Morning"
+
+ else:
+ print "Hello"
+
+#. Every ``if`` block must be followed by an ``else`` block. T or F?
+
+ Answer: F
+
+#. Every ``if/elif/else`` ladder MUST end with an ``else`` block. T/F?
+
+ Answer: F
+
+#. An if/elif/else ladder can have any number of elif blocks. T or F?
+
+ Answer: T
+
+#. What will be printed at the end this code block::
+
+ x = 20
+
+ if x > 10:
+ print x * 100
+
+ Answer: IndentationError - Expected and indented block..
+
+#. What will be printed at the end this code block::
+
+ x = 20
+
+ if x > 10:
+ print x * 100
+ else:
+ print x
+
+ Answer: SyntaxError
+
+#. What will be printed at the end this code block::
+
+ x = 20
+
+ if x > 10:
+ print x * 100
+ else:
+ print x
+
+ Answer: 2000
+
+#. Convert the if else ladder below into a ternary conditional
+ statement::
+
+ x = 20
+
+ if x > 10:
+ print x * 100
+ else:
+ print x
+
+ Answer: print x * 100 if x > 10 else x
+
+
+Larger Questions
+----------------
+
+.. A minimum of 2 questions here (along with answers)
+
+1. Question 1
+2. Question 2
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/conditionals/quickref.tex Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,8 @@
+Creating a linear array:\\
+{\ex \lstinline| x = linspace(0, 2*pi, 50)|}
+
+Plotting two variables:\\
+{\ex \lstinline| plot(x, sin(x))|}
+
+Plotting two lists of equal length x, y:\\
+{\ex \lstinline| plot(x, y)|}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/conditionals/script.rst Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,192 @@
+.. Objectives
+.. ----------
+
+.. Clearly state the objectives of the LO (along with RBT level)
+
+.. Prerequisites
+.. -------------
+
+.. 1. Name of LO-1
+.. 2. Name of LO-2
+.. 3. Name of LO-3
+
+.. Author : Madhu
+ Internal Reviewer :
+ External Reviewer :
+ Checklist OK? : <put date stamp here, if OK> [2010-10-05]
+
+
+Script
+------
+
+{{{ Show the slide containing the title }}}
+
+Hello friends. Welcome to this spoken tutorial on Getting started with
+strings.
+
+{{{ Show the slide containing the outline }}}
+
+In this tutorial, we will learn the basic conditional constructs
+available in Python. We learn the if/else, if/elif/else and ternary
+conditional constructs available in Python.
+
+{{{ Shift to terminal and start ipython }}}
+
+To begin with let us start ipython, by typing::
+
+ ipython
+
+on the terminal
+
+Whenever we have two possible states that can occur depending on a
+whether a certain condition we can use if/else construct in
+Python. Say for example we have a variable "a" which stores integers
+and we are required to find out whether the value of the variable "a"
+is an even number or an odd number. To test out conditional statements
+as an example, let us say the value of the variable "a" is 5::
+
+ a = 5
+
+In such a case we can write the if/else block as::
+
+ if a % 2 == 0:
+ print "Even"
+ else:
+ print "Odd"
+
+When the value of the variable "a" is divided by 2 and the remainder
+is 0 i.e. the result of the operation "a modulo 2" is 0 the condition
+"a % 2 == 0" evaluates to True, so the code within the if block gets
+executed. This means that the value of "a" is Even.
+
+If the operation "a modulo 2" is not 0 the condition "a % 2 == 0"
+evaluates to False and hence the code block within else gets executed
+which means that the value of "a" is Odd.
+
+Note in such a case only one of the two blocks get executed depending
+on whether the condition is True or False.
+
+There is a very important sytactic element to understand here. All the
+statements which are inside a certain code block are indented by 4
+spaces. The statement which starts a new code block after it, i.e. the
+if statement in this example ends with a colon (:). So the next
+immediate line will be inside the if block and hence indented by 4
+spaces. To come out of the code block we have to come back to the
+previous indentation level as shown in the else line here. Again the
+line following else will be in a new block so else line ends with a
+colon and the following block of code is indented by 4.
+
+As we use if/else statement when we have a condition which can take
+one of the two states, we may have conditions which can take more than
+two states. In such a scenario Python provides if/elif/else
+statements. Let us take an example. We have a variable "a" which holds
+integer values. We need to print "positive" if the value of a is
+positive, "negative" if it is negative and "zero" if the value of the
+variable "a" is 0. Let us use if/elif/else ladder for it. For the
+purposes of testing our code let us assume that the value of a is -3::
+
+ a = -3
+
+ if a > 0:
+ print "positive"
+ elif a < 0:
+ print "negative"
+ else:
+ print "zero"
+
+This if/elif/else ladder is self explanatory. All the syntax and rules
+as said for if/else statements hold. The only addition here is the
+elif statement which can have another condition of its own.
+
+Here, exactly one block of code is executed and that block of code
+corresponds to the condition which first evaluates to True. Even if
+there is a situation where multiple conditions evaluate to True all
+the subsequent conditions other than the first one which evaluates to
+True are neglected. Consequently, the else block gets executed if and
+only if all the conditions evaluate to False.
+
+Also, the else block in both if/else statement and if/elif/else is
+optional. We can have a single if statement or just if/elif statements
+without having else block at all. Also, there can be any number of
+elif's within an if/elif/else ladder. For example
+
+{{{ Show slide for this }}}
+
+ if user == 'admin':
+ # Do admin operations
+ elif user == 'moderator':
+ # Do moderator operations
+ elif user == 'client':
+ # Do customer operations
+
+{{{ end of slide switch to ipython }}}
+
+is completely valid. Note that there are multiple elif blocks and there
+is no else block.
+
+In addition to these conditional statements, Python provides a very
+convenient ternary conditional operator. Let us take the following
+example where we read the marks data from a data file which is
+obtained as a string as we read a file. The marks can be in the range
+of 0 to 100 or 'AA' if the student is absent. In such a case to obtain
+the marks as an integer we can use the ternary conditional
+operator. Let us say the string score is stored in score_str
+variable::
+
+ score_str = 'AA'
+
+Now let us use the ternary conditional operator::
+
+ score = int(score_str) if score_str != 'AA' else 0
+
+This is just the if/else statement block which written in a more
+convenient form and is very helpful when we have only one statement
+for each block. This conditional statement effectively means as we
+would have exactly specified in the English language which will be
+like score is integer of score_str is score_str is not 'AA' otherwise
+it is 0. This means that we make the scores of the students who were
+absent for the exam 0.
+
+Moving on, there are certain situations where we will have to no
+operations or statements within the block of code. For example, we
+have a code where we are waiting for the keyboard input. If the user
+enters "s" as the input we would perform some operation nothing
+otherwise. In such cases "pass" statement comes very handy::
+
+ a = raw_input("Enter 'c' to calculate and exit, 'd' to display the existing
+ results exit and 'x' to exit and any other key to continue: ")
+
+ if a == 'c':
+ # Calculate the marks and exit
+ elif a == 'd':
+ # Display the results and exit
+ elif a == 'x':
+ # Exit the program
+ else:
+ pass
+
+In this case "pass" statement acts as a place holder for the block of
+code. It is equivalent to a null operation. It literally does
+nothing. So "pass" statement can be used as a null operation
+statement, or it can used as a place holder when the actual code
+implementation for a particular block of code is not known yet but has
+to be filled up later.
+
+{{{ Show summary slide }}}
+
+This brings us to the end of the tutorial session on conditional
+statements in Python. In this tutorial session we learnt
+
+ * What are conditional statements
+ * if/else statement
+ * if/elif/else statement
+ * Ternary conditional statement - C if X else Y
+ * and the "pass" statement
+
+{{{ Show the "sponsored by FOSSEE" slide }}}
+
+This tutorial was created as a part of FOSSEE project, NME ICT, MHRD India
+
+Hope you have enjoyed and found it useful.
+Thank you!
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/conditionals/slides.org Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,123 @@
+#+LaTeX_CLASS: beamer
+#+LaTeX_CLASS_OPTIONS: [presentation]
+#+BEAMER_FRAME_LEVEL: 1
+
+#+BEAMER_HEADER_EXTRA: \usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent}
+#+COLUMNS: %45ITEM %10BEAMER_env(Env) %10BEAMER_envargs(Env Args) %4BEAMER_col(Col) %8BEAMER_extra(Extra)
+#+PROPERTY: BEAMER_col_ALL 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 :ETC
+
+#+LaTeX_CLASS: beamer
+#+LaTeX_CLASS_OPTIONS: [presentation]
+
+#+LaTeX_HEADER: \usepackage[english]{babel} \usepackage{ae,aecompl}
+#+LaTeX_HEADER: \usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet}
+
+#+LaTeX_HEADER: \usepackage{listings}
+
+#+LaTeX_HEADER:\lstset{language=Python, basicstyle=\ttfamily\bfseries,
+#+LaTeX_HEADER: commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen},
+#+LaTeX_HEADER: showstringspaces=false, keywordstyle=\color{blue}\bfseries}
+
+#+TITLE: Accessing parts of arrays
+#+AUTHOR: FOSSEE
+#+EMAIL:
+#+DATE:
+
+#+DESCRIPTION:
+#+KEYWORDS:
+#+LANGUAGE: en
+#+OPTIONS: H:3 num:nil toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t
+#+OPTIONS: TeX:t LaTeX:nil skip:nil d:nil todo:nil pri:nil tags:not-in-toc
+
+* Outline
+ - Manipulating one and multi dimensional arrays
+ - Access and change individual elements
+ - Access and change rows and columns
+ - Slicing and striding on arrays to access chunks
+ - Read images into arrays and manipulations
+* Sample Arrays
+ #+begin_src python
+ In []: A = array([12, 23, 34, 45, 56])
+
+ In []: C = array([[11, 12, 13, 14, 15],
+ [21, 22, 23, 24, 25],
+ [31, 32, 33, 34, 35],
+ [41, 42, 43, 44, 45],
+ [51, 52, 53, 54, 55]])
+
+ #+end_src
+* Question 1
+ Change the last column of ~C~ to zeroes.
+* Solution 1
+ #+begin_src python
+ In []: C[:, -1] = 0
+ #+end_src
+* Question 2
+ Change ~A~ to ~[11, 12, 13, 14, 15]~.
+* Solution 2
+ #+begin_src python
+ In []: A[:] = [11, 12, 13, 14, 15]
+ #+end_src
+* squares.png
+ #+begin_latex
+ \begin{center}
+ \includegraphics[scale=0.6]{squares}
+ \end{center}
+ #+end_latex
+* Question 3
+ - obtain ~[22, 23]~ from ~C~.
+ - obtain ~[11, 21, 31, 41]~ from ~C~.
+ - obtain ~[21, 31, 41, 0]~.
+* Solution 3
+ #+begin_src python
+ In []: C[1, 1:3]
+ In []: C[0:4, 0]
+ In []: C[1:5, 0]
+ #+end_src
+* Question 4
+ Obtain ~[[23, 24], [33, -34]]~ from ~C~
+* Solution 4
+ #+begin_src python
+ In []: C[1:3, 2:4]
+ #+end_src
+* Question 5
+ Obtain the square in the center of the image
+* Solution 5
+ #+begin_src python
+ In []: imshow(I[75:225, 75:225])
+ #+end_src
+* Question 6
+ Obtain the following
+ #+begin_src python
+ [[12, 0], [42, 0]]
+ [[12, 13, 14], [0, 0, 0]]
+ #+end_src
+
+* Solution 6
+ #+begin_src python
+ In []: C[::3, 1::3]
+ In []: C[::4, 1:4]
+ #+end_src
+* Summary
+ You should now be able to --
+ - Manipulate 1D \& Multi dimensional arrays
+ - Access and change individual elements
+ - Access and change rows and columns
+ - Slice and stride on arrays
+ - Read images into arrays and manipulate them.
+* Thank you!
+#+begin_latex
+ \begin{block}{}
+ \begin{center}
+ This spoken tutorial has been produced by the
+ \textcolor{blue}{FOSSEE} team, which is funded by the
+ \end{center}
+ \begin{center}
+ \textcolor{blue}{National Mission on Education through \\
+ Information \& Communication Technology \\
+ MHRD, Govt. of India}.
+ \end{center}
+ \end{block}
+#+end_latex
+
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/conditionals/slides.tex Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,106 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%Tutorial slides on Python.
+%
+% Author: FOSSEE
+% Copyright (c) 2009, FOSSEE, IIT Bombay
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\documentclass[14pt,compress]{beamer}
+%\documentclass[draft]{beamer}
+%\documentclass[compress,handout]{beamer}
+%\usepackage{pgfpages}
+%\pgfpagesuselayout{2 on 1}[a4paper,border shrink=5mm]
+
+% Modified from: generic-ornate-15min-45min.de.tex
+\mode<presentation>
+{
+ \usetheme{Warsaw}
+ \useoutertheme{infolines}
+ \setbeamercovered{transparent}
+}
+
+\usepackage[english]{babel}
+\usepackage[latin1]{inputenc}
+%\usepackage{times}
+\usepackage[T1]{fontenc}
+
+\usepackage{ae,aecompl}
+\usepackage{mathpazo,courier,euler}
+\usepackage[scaled=.95]{helvet}
+
+\definecolor{darkgreen}{rgb}{0,0.5,0}
+
+\usepackage{listings}
+\lstset{language=Python,
+ basicstyle=\ttfamily\bfseries,
+ commentstyle=\color{red}\itshape,
+ stringstyle=\color{darkgreen},
+ showstringspaces=false,
+ keywordstyle=\color{blue}\bfseries}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% Macros
+\setbeamercolor{emphbar}{bg=blue!20, fg=black}
+\newcommand{\emphbar}[1]
+{\begin{beamercolorbox}[rounded=true]{emphbar}
+ {#1}
+ \end{beamercolorbox}
+}
+\newcounter{time}
+\setcounter{time}{0}
+\newcommand{\inctime}[1]{\addtocounter{time}{#1}{\tiny \thetime\ m}}
+
+\newcommand{\typ}[1]{\lstinline{#1}}
+
+\newcommand{\kwrd}[1]{ \texttt{\textbf{\color{blue}{#1}}} }
+
+% Title page
+\title{Your Title Here}
+
+\author[FOSSEE] {FOSSEE}
+
+\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay}
+\date{}
+
+% DOCUMENT STARTS
+\begin{document}
+
+\begin{frame}
+ \maketitle
+\end{frame}
+
+\begin{frame}[fragile]
+ \frametitle{Outline}
+ \begin{itemize}
+ \item
+ \end{itemize}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% All other slides here. %%
+%% The same slides will be used in a classroom setting. %%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\begin{frame}[fragile]
+ \frametitle{Summary}
+ \begin{itemize}
+ \item
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Thank you!}
+ \begin{block}{}
+ \begin{center}
+ This spoken tutorial has been produced by the
+ \textcolor{blue}{FOSSEE} team, which is funded by the
+ \end{center}
+ \begin{center}
+ \textcolor{blue}{National Mission on Education through \\
+ Information \& Communication Technology \\
+ MHRD, Govt. of India}.
+ \end{center}
+ \end{block}
+\end{frame}
+
+\end{document}
--- a/getting-started-sagenotebook.rst Tue Oct 12 17:15:11 2010 +0530
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,295 +0,0 @@
-Hello friends. Welcome to this spoken tutorial on Getting started with
-sage and sage notebook.
-
-{{{ Show the slide containing the title }}}
-
-{{{ Show the slide containing the outline }}}
-
-In this tutorial, we will learn what Sage is, what is Sage notebook,
-how to start and use the sage notebook. In the notebook we will be
-specifically learning how to execute our code, how to write
-annotations and other content, typesetting the content and how to use
-the offline help available.
-
-{{{ Show the slide on what is Sage }}}
-
-To start with, What is Sage? Sage is a free, open-source mathematical
-software. Sage can do a lot of math stuff for you including but not
-limited to algebra, calculus, geometry, cryptography, graph theory
-among other things. It can also be used as aid in teaching and
-research in any of the areas that Sage supports. So let us start Sage
-now
-
-{{{ Shift to terminal }}}
-
-We are assuming that you have Sage installed on your computer now. If
-not please visit the page
-http://sagemath.org/doc/tutorial/introduction.html#installation for
-the tutorial on how to install Sage. Let us move on now.
-
-On the terminal type::
-
- sage
-
-This should start a new Sage shell with the prompt sage: which looks
-like this
-
-{{{ Show what is displayed on the terminal }}}
-
-So now we can type all the commands that Sage supports here. But Sage
-comes bundled with a much much much more elegant tool called Sage
-Notebook? What is Sage Notebook? Sage Notebook provides a web based
-user interface to use Sage. So once we have a Sage notebook server up
-and running all we want is a browser to access the Sage
-functionality. For example there is an official instance of Sage
-Notebook server running at http://sagenb.org You can visit that page,
-create an account there and start using Sage! So all you need is just
-a browser, a modern browser
-
-{{{ Intentional *cough* *cough* }}}
-
-to use Sage and nothing else! The Sage notebook also provides a
-convenient way of sharing and publishing our work which is very handy
-when we use Sage for research or for teaching.
-
-However we can also run our own instances of Sage notebook servers on
-all the computers we have a local installation of Sage. To start the
-notebook server just type::
-
- notebook()
-
-on the Sage prompt. This will start the Sage Notebook server. If we
-are starting the notebook server for the first time, we are prompted
-to enter the password for the admin. Type the password and make a note
-of it. After this Sage automatically starts a browser page for you
-with the notebook opened.
-
-If it doesn't automatically start a browser page check if the Notebook
-server started and there were no problems. If so open your browser and
-in the address bar type the URL shown in the instructions upon running
-the notebook command on the sage prompt.
-
-{{{ The notebook() command gives an instruction telling
-Open your web browser to http://localhost:8000. Point towards it }}}
-
-In our case it is http://localhost:{{{ Tell whatever is shown }}}
-
-{{{ Show the browser with Sage notebook }}}
-
-If you are not logged in yet, it shows the Notebook home page and
-textboxes to type the username and the password. You can use the
-username 'admin' and the password you gave while starting the notebook
-server for the first time. There are also links to recover forgotten
-password and to create new accounts.
-
-{{{ If you are logged in tell that you are logged in, log out and show
-what is said above for the login page }}}
-
-Once we are logged in with the admin account we can see the notebook
-admin page. A notebook can contain a collection of Sage Notebook
-worksheets. Worksheets are basically the working area. This is where
-we enter all the Sage commands on the notebook.
-
-The admin page lists all the worksheets created. On the topmost part
-of this page we have the links to various pages.
-
-{{{ Whenever you talk on an individual link point your mouse towards
-the link. For each of the link go to the page and explain as below }}}
-
-The home link takes us to the admin home page. The published link
-takes us to the page which lists all the published worksheets. The log
-link has the complete log of all the actions we did on the
-notebook. We have the settings link where can configure our notebook,
-the notebook server, we can create and mangage accounts. We have a
-link to help upon clicking opens a new window with the complete help
-of Sage. The entire documentation of Sage is supplied with Sage for
-offline reference and this help link is the way to get into it. Then
-we can report bugs about Sage by clicking on Report a Problem link and
-there is a link to sign out of the notebook.
-
-We can create a new worksheet by clicking New Worksheet link
-
-{{{ Click on the link }}}
-
-Sage prompts you for a name for the worksheet. Let us name the
-worksheet as nbtutorial. Now we have our first worksheet which is
-empty.
-
-A worksheet will contain a collection of cells. Every Sage command
-must be entered in this cell. Cell is equivalent to the prompt on
-console. When we create a new worksheet, to start with we will have
-one empty cell. Let us try out some math here::
-
- 2 + 2
- 57.1 ^ 100
-
-The cap operator is used for exponentiation. If you observed carefully
-we typed two commands but the output of only last command was
-displayed. By default each cell displays the result of only the last
-operation. We have to use print statement to display all the results
-we want to be displayed.
-
-{{{ Demonstrate creating a new cell }}}
-
-Now to perform more operations we want more cells. So how do we create
-a new cell? It is very simple. As we hover our mouse above or below
-the existing cells we see a blue line, by clicking on this new line we
-can create a new cell.
-
-We have a cell, we have typed some commands in it, but how do we
-evaluate that cell? Pressing Shift along with Enter evaluates the
-cell. Alternatively we can also click on the evaluate link to evaluate
-the cell
-
-{{{ Evaluate the cell and demonstrate for both methods separately
-}}}::
-
- matrix([[1,2], [3,4]])^(-1)
-
-After we create many cells, we may want to move between the cells. To
-move between the cells use Up and Down arrow keys. Also clicking on
-the cell will let you edit that particular cell.
-
-{{{ Move between two cells created }}}
-
-To delete a cell, clear the contents of the cell and hit backspace
-
-{{{ Clear and demonstrate deleting the cell }}}::
-
- Makes no sense
-
-If you want to add annotations in the worksheet itself on the blue
-line that appears on hovering the mouse around the cell, Hold Shift
-and click on the line. This creates a What You See Is What You Get
-cell.
-
-{{{ Create a HTML editable cell }}}
-
-We can make our text here rich text. We can make it bold, Italics, we
-can create bulleted and enumerated lists in this area::
-
- This text contains both the **bold** text and also *italicised*
- text.
- It also contains bulleted list:
- * Item 1
- * Item 2
- It also contains enumerate list:
- 1. Item 1
- 2. Item 2
-
-In the same cell we can display typeset math using the LaTeX like
-syntax::
-
- $\int_0^\infty e^{-x} \, dx$
-
-We enclose the math to be typeset within $ and $ or $$ and $$ as in
-LaTeX.
-
-We can also obtain help for a particular Sage command or function
-within the worksheet itself by using a question mark following the
-command::
-
- sin?
-
-Evaluating this cell gives me the entire help for the sin function
-inline on the worksheet itself. Similarly we can also look at the
-source code of each command or function using double question mark::
-
- matrix??
-
-Sage notebook also provides the feature for autocompletion. To
-autocomplete a command type first few unique characters and hit tab
-key::
-
- sudo<tab>
-
-To see all the commands starting with a specific name type those
-characters and hit tab::
-
- plo<tab>
-
-To list all the methods that are available for a certain variable or
-a datatype we can use the variable name followed by the dot to access
-the methods available on it and then hit tab::
-
- s = 'Hello'
- s.rep<tab>
-
-The output produced by each cell can be one of the three states. It
-can be either the full output, or truncated output or hidden output.
-The output area will display the error if the Sage code we wrote in
-the cell did not successfully execute::
-
- a, b = 10
-
-{{{ Show the three states }}}
-
-The default output we obtained now is a truncated output. Clicking at
-the left of the output area when the mouse pointer turns to hand gives
-us the full output, clicking again makes the output hidden and it
-cycles.
-
-Lastly, Sage supports a variety of languages and each cell on the
-worksheet can contain code written in a specific language. It is
-possible to instruct Sage to interpret the code in the language we
-have written. This can be done by putting percentage sign(%) followed
-by the name of the language. For example, to interpret the cell as
-Python code we put::
-
- %python
-
-as the first line in the cell. Similarly we have: %sh for shell
-scripting, %fortran for Fortran, %gap for GAP and so on. Let us see
-how this works. Say I have an integer. The type of the integer in
-default Sage mode is
-{{{ Read the output }}}::
-
- a = 1
- type(a)
-
- Output: <type 'sage.rings.integer.Integer'>
-
-We see that Integers are Sage Integers. Now let us put %python as the
-first line of the cell and execute the same code snippet::
-
- %python
- a = 1
- type(a)
-
- Output: <type 'int'>
-
-Now we see that the integer is a Python integer. Why? Because now we
-instructed Sage to interpret that cell as Python code.
-
-This brings us to the end of the tutorial on using Sage. We learnt
-quite a lot about using the Notebook User Interface of Sage. We are
-now confident that we can comfortably use the notebook to learn more
-about Sage in the following tutorials. Let us summarize what we
-learnt. In this session we learnt
-
- * What is Sage
- * How to start Sage shell
- * What is Sage notebook
- * How to start the Sage notebook
- * How to create accounts and start using the notebook
- * How to create new worksheets
- * The menus available on the notebook
- * About cells in the worksheet
- * Methods to evaluate the cell, create new cells, delete the cells
- and navigate around the cells
- * To make annotations in the worksheet
- * Tab completions
- * And embedding code of other scripting languages in the cells
-
-{{{ Show the "sponsored by FOSSEE" slide }}}
-
-This tutorial was created as a part of FOSSEE project, NME ICT, MHRD India
-
-Hope you have enjoyed and found it useful.
-Thankyou
-
-.. Author : Madhu
- Internal Reviewer 1 : [potential reviewer: Anoop]
- Internal Reviewer 2 : [potential reviewer: Puneeth]
- External Reviewer :
-
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/getting-started-sagenotebook/questions.rst Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,28 @@
+Objective Questions
+-------------------
+
+.. A mininum of 8 questions here (along with answers)
+
+1. Question 1
+
+ Answer: Answer 1
+
+ OR
+
+ Answer::
+
+ answer code line 1
+ answer code line 2
+ answer code line 3
+
+2. Question 2
+3. Question 3
+
+
+Larger Questions
+----------------
+
+.. A minimum of 2 questions here (along with answers)
+
+1. Question 1
+2. Question 2
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/getting-started-sagenotebook/quickref.tex Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,8 @@
+Creating a linear array:\\
+{\ex \lstinline| x = linspace(0, 2*pi, 50)|}
+
+Plotting two variables:\\
+{\ex \lstinline| plot(x, sin(x))|}
+
+Plotting two lists of equal length x, y:\\
+{\ex \lstinline| plot(x, y)|}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/getting-started-sagenotebook/script.rst Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,323 @@
+.. Objectives
+.. ----------
+
+.. Clearly state the objectives of the LO (along with RBT level)
+
+.. By the end of this tutorial, you should --
+
+.. #. Know what Sage and Sage notebook are.
+.. #. Be able to start a Sage shell or notebook
+.. #. Be able to start using the notebook
+.. #. Be able to create new worksheets
+.. #. Know about the menu options available
+.. #. Know about the cells in the worksheet
+.. #. Be able to evaluate cells, create and delete cells, navigate them.
+.. #. Be able to make annotations in the worksheet
+.. #. Be able to use tab completion.
+.. #. Be able to use code from other languages in the cells.
+
+.. Prerequisites
+.. -------------
+
+.. None.
+
+.. Author : Madhu
+ Internal Reviewer :
+ External Reviewer :
+ Checklist OK? : <put date stamp here, if OK> [2010-10-05]
+
+
+Script
+------
+
+Hello friends. Welcome to this spoken tutorial on Getting started with
+sage and sage notebook.
+
+{{{ Show the slide containing the title }}}
+
+{{{ Show the slide containing the outline }}}
+
+In this tutorial, we will learn what Sage is, what is Sage notebook,
+how to start and use the sage notebook. In the notebook we will be
+specifically learning how to execute our code, how to write
+annotations and other content, typesetting the content and how to use
+the offline help available.
+
+{{{ Show the slide on what is Sage }}}
+
+To start with, What is Sage? Sage is a free, open-source mathematical
+software. Sage can do a lot of math stuff for you including but not
+limited to algebra, calculus, geometry, cryptography, graph theory
+among other things. It can also be used as aid in teaching and
+research in any of the areas that Sage supports. So let us start Sage
+now
+
+{{{ Shift to terminal }}}
+
+We are assuming that you have Sage installed on your computer now. If
+not please visit the page
+http://sagemath.org/doc/tutorial/introduction.html#installation for
+the tutorial on how to install Sage. Let us move on now.
+
+On the terminal type::
+
+ sage
+
+This should start a new Sage shell with the prompt sage: which looks
+like this
+
+{{{ Show what is displayed on the terminal }}}
+
+So now we can type all the commands that Sage supports here. But Sage
+comes bundled with a much much much more elegant tool called Sage
+Notebook? What is Sage Notebook? Sage Notebook provides a web based
+user interface to use Sage. So once we have a Sage notebook server up
+and running all we want is a browser to access the Sage
+functionality. For example there is an official instance of Sage
+Notebook server running at http://sagenb.org You can visit that page,
+create an account there and start using Sage! So all you need is just
+a browser, a modern browser
+
+{{{ Intentional *cough* *cough* }}}
+
+to use Sage and nothing else! The Sage notebook also provides a
+convenient way of sharing and publishing our work which is very handy
+when we use Sage for research or for teaching.
+
+However we can also run our own instances of Sage notebook servers on
+all the computers we have a local installation of Sage. To start the
+notebook server just type::
+
+ notebook()
+
+on the Sage prompt. This will start the Sage Notebook server. If we
+are starting the notebook server for the first time, we are prompted
+to enter the password for the admin. Type the password and make a note
+of it. After this Sage automatically starts a browser page for you
+with the notebook opened.
+
+If it doesn't automatically start a browser page check if the Notebook
+server started and there were no problems. If so open your browser and
+in the address bar type the URL shown in the instructions upon running
+the notebook command on the sage prompt.
+
+{{{ The notebook() command gives an instruction telling
+Open your web browser to http://localhost:8000. Point towards it }}}
+
+In our case it is http://localhost:{{{ Tell whatever is shown }}}
+
+{{{ Show the browser with Sage notebook }}}
+
+If you are not logged in yet, it shows the Notebook home page and
+textboxes to type the username and the password. You can use the
+username 'admin' and the password you gave while starting the notebook
+server for the first time. There are also links to recover forgotten
+password and to create new accounts.
+
+{{{ If you are logged in tell that you are logged in, log out and show
+what is said above for the login page }}}
+
+Once we are logged in with the admin account we can see the notebook
+admin page. A notebook can contain a collection of Sage Notebook
+worksheets. Worksheets are basically the working area. This is where
+we enter all the Sage commands on the notebook.
+
+The admin page lists all the worksheets created. On the topmost part
+of this page we have the links to various pages.
+
+{{{ Whenever you talk on an individual link point your mouse towards
+the link. For each of the link go to the page and explain as below }}}
+
+The home link takes us to the admin home page. The published link
+takes us to the page which lists all the published worksheets. The log
+link has the complete log of all the actions we did on the
+notebook. We have the settings link where can configure our notebook,
+the notebook server, we can create and mangage accounts. We have a
+link to help upon clicking opens a new window with the complete help
+of Sage. The entire documentation of Sage is supplied with Sage for
+offline reference and this help link is the way to get into it. Then
+we can report bugs about Sage by clicking on Report a Problem link and
+there is a link to sign out of the notebook.
+
+We can create a new worksheet by clicking New Worksheet link
+
+{{{ Click on the link }}}
+
+Sage prompts you for a name for the worksheet. Let us name the
+worksheet as nbtutorial. Now we have our first worksheet which is
+empty.
+
+A worksheet will contain a collection of cells. Every Sage command
+must be entered in this cell. Cell is equivalent to the prompt on
+console. When we create a new worksheet, to start with we will have
+one empty cell. Let us try out some math here::
+
+ 2 + 2
+ 57.1 ^ 100
+
+The cap operator is used for exponentiation. If you observed carefully
+we typed two commands but the output of only last command was
+displayed. By default each cell displays the result of only the last
+operation. We have to use print statement to display all the results
+we want to be displayed.
+
+{{{ Demonstrate creating a new cell }}}
+
+Now to perform more operations we want more cells. So how do we create
+a new cell? It is very simple. As we hover our mouse above or below
+the existing cells we see a blue line, by clicking on this new line we
+can create a new cell.
+
+We have a cell, we have typed some commands in it, but how do we
+evaluate that cell? Pressing Shift along with Enter evaluates the
+cell. Alternatively we can also click on the evaluate link to evaluate
+the cell
+
+{{{ Evaluate the cell and demonstrate for both methods separately
+}}}::
+
+ matrix([[1,2], [3,4]])^(-1)
+
+After we create many cells, we may want to move between the cells. To
+move between the cells use Up and Down arrow keys. Also clicking on
+the cell will let you edit that particular cell.
+
+{{{ Move between two cells created }}}
+
+To delete a cell, clear the contents of the cell and hit backspace
+
+{{{ Clear and demonstrate deleting the cell }}}::
+
+ Makes no sense
+
+If you want to add annotations in the worksheet itself on the blue
+line that appears on hovering the mouse around the cell, Hold Shift
+and click on the line. This creates a What You See Is What You Get
+cell.
+
+{{{ Create a HTML editable cell }}}
+
+We can make our text here rich text. We can make it bold, Italics, we
+can create bulleted and enumerated lists in this area::
+
+ This text contains both the **bold** text and also *italicised*
+ text.
+ It also contains bulleted list:
+ * Item 1
+ * Item 2
+ It also contains enumerate list:
+ 1. Item 1
+ 2. Item 2
+
+In the same cell we can display typeset math using the LaTeX like
+syntax::
+
+ $\int_0^\infty e^{-x} \, dx$
+
+We enclose the math to be typeset within $ and $ or $$ and $$ as in
+LaTeX.
+
+We can also obtain help for a particular Sage command or function
+within the worksheet itself by using a question mark following the
+command::
+
+ sin?
+
+Evaluating this cell gives me the entire help for the sin function
+inline on the worksheet itself. Similarly we can also look at the
+source code of each command or function using double question mark::
+
+ matrix??
+
+Sage notebook also provides the feature for autocompletion. To
+autocomplete a command type first few unique characters and hit tab
+key::
+
+ sudo<tab>
+
+To see all the commands starting with a specific name type those
+characters and hit tab::
+
+ plo<tab>
+
+To list all the methods that are available for a certain variable or
+a datatype we can use the variable name followed by the dot to access
+the methods available on it and then hit tab::
+
+ s = 'Hello'
+ s.rep<tab>
+
+The output produced by each cell can be one of the three states. It
+can be either the full output, or truncated output or hidden output.
+The output area will display the error if the Sage code we wrote in
+the cell did not successfully execute::
+
+ a, b = 10
+
+{{{ Show the three states }}}
+
+The default output we obtained now is a truncated output. Clicking at
+the left of the output area when the mouse pointer turns to hand gives
+us the full output, clicking again makes the output hidden and it
+cycles.
+
+Lastly, Sage supports a variety of languages and each cell on the
+worksheet can contain code written in a specific language. It is
+possible to instruct Sage to interpret the code in the language we
+have written. This can be done by putting percentage sign(%) followed
+by the name of the language. For example, to interpret the cell as
+Python code we put::
+
+ %python
+
+as the first line in the cell. Similarly we have: %sh for shell
+scripting, %fortran for Fortran, %gap for GAP and so on. Let us see
+how this works. Say I have an integer. The type of the integer in
+default Sage mode is
+{{{ Read the output }}}::
+
+ a = 1
+ type(a)
+
+ Output: <type 'sage.rings.integer.Integer'>
+
+We see that Integers are Sage Integers. Now let us put %python as the
+first line of the cell and execute the same code snippet::
+
+ %python
+ a = 1
+ type(a)
+
+ Output: <type 'int'>
+
+Now we see that the integer is a Python integer. Why? Because now we
+instructed Sage to interpret that cell as Python code.
+
+This brings us to the end of the tutorial on using Sage. We learnt
+quite a lot about using the Notebook User Interface of Sage. We are
+now confident that we can comfortably use the notebook to learn more
+about Sage in the following tutorials. Let us summarize what we
+learnt. In this session we learnt
+
+ * What is Sage
+ * How to start Sage shell
+ * What is Sage notebook
+ * How to start the Sage notebook
+ * How to create accounts and start using the notebook
+ * How to create new worksheets
+ * The menus available on the notebook
+ * About cells in the worksheet
+ * Methods to evaluate the cell, create new cells, delete the cells
+ and navigate around the cells
+ * To make annotations in the worksheet
+ * Tab completions
+ * And embedding code of other scripting languages in the cells
+
+{{{ Show the "sponsored by FOSSEE" slide }}}
+
+This tutorial was created as a part of FOSSEE project, NME ICT, MHRD India
+
+Hope you have enjoyed and found it useful.
+Thank you!
+
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/getting-started-sagenotebook/slides.org Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,123 @@
+#+LaTeX_CLASS: beamer
+#+LaTeX_CLASS_OPTIONS: [presentation]
+#+BEAMER_FRAME_LEVEL: 1
+
+#+BEAMER_HEADER_EXTRA: \usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent}
+#+COLUMNS: %45ITEM %10BEAMER_env(Env) %10BEAMER_envargs(Env Args) %4BEAMER_col(Col) %8BEAMER_extra(Extra)
+#+PROPERTY: BEAMER_col_ALL 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 :ETC
+
+#+LaTeX_CLASS: beamer
+#+LaTeX_CLASS_OPTIONS: [presentation]
+
+#+LaTeX_HEADER: \usepackage[english]{babel} \usepackage{ae,aecompl}
+#+LaTeX_HEADER: \usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet}
+
+#+LaTeX_HEADER: \usepackage{listings}
+
+#+LaTeX_HEADER:\lstset{language=Python, basicstyle=\ttfamily\bfseries,
+#+LaTeX_HEADER: commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen},
+#+LaTeX_HEADER: showstringspaces=false, keywordstyle=\color{blue}\bfseries}
+
+#+TITLE: Accessing parts of arrays
+#+AUTHOR: FOSSEE
+#+EMAIL:
+#+DATE:
+
+#+DESCRIPTION:
+#+KEYWORDS:
+#+LANGUAGE: en
+#+OPTIONS: H:3 num:nil toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t
+#+OPTIONS: TeX:t LaTeX:nil skip:nil d:nil todo:nil pri:nil tags:not-in-toc
+
+* Outline
+ - Manipulating one and multi dimensional arrays
+ - Access and change individual elements
+ - Access and change rows and columns
+ - Slicing and striding on arrays to access chunks
+ - Read images into arrays and manipulations
+* Sample Arrays
+ #+begin_src python
+ In []: A = array([12, 23, 34, 45, 56])
+
+ In []: C = array([[11, 12, 13, 14, 15],
+ [21, 22, 23, 24, 25],
+ [31, 32, 33, 34, 35],
+ [41, 42, 43, 44, 45],
+ [51, 52, 53, 54, 55]])
+
+ #+end_src
+* Question 1
+ Change the last column of ~C~ to zeroes.
+* Solution 1
+ #+begin_src python
+ In []: C[:, -1] = 0
+ #+end_src
+* Question 2
+ Change ~A~ to ~[11, 12, 13, 14, 15]~.
+* Solution 2
+ #+begin_src python
+ In []: A[:] = [11, 12, 13, 14, 15]
+ #+end_src
+* squares.png
+ #+begin_latex
+ \begin{center}
+ \includegraphics[scale=0.6]{squares}
+ \end{center}
+ #+end_latex
+* Question 3
+ - obtain ~[22, 23]~ from ~C~.
+ - obtain ~[11, 21, 31, 41]~ from ~C~.
+ - obtain ~[21, 31, 41, 0]~.
+* Solution 3
+ #+begin_src python
+ In []: C[1, 1:3]
+ In []: C[0:4, 0]
+ In []: C[1:5, 0]
+ #+end_src
+* Question 4
+ Obtain ~[[23, 24], [33, -34]]~ from ~C~
+* Solution 4
+ #+begin_src python
+ In []: C[1:3, 2:4]
+ #+end_src
+* Question 5
+ Obtain the square in the center of the image
+* Solution 5
+ #+begin_src python
+ In []: imshow(I[75:225, 75:225])
+ #+end_src
+* Question 6
+ Obtain the following
+ #+begin_src python
+ [[12, 0], [42, 0]]
+ [[12, 13, 14], [0, 0, 0]]
+ #+end_src
+
+* Solution 6
+ #+begin_src python
+ In []: C[::3, 1::3]
+ In []: C[::4, 1:4]
+ #+end_src
+* Summary
+ You should now be able to --
+ - Manipulate 1D \& Multi dimensional arrays
+ - Access and change individual elements
+ - Access and change rows and columns
+ - Slice and stride on arrays
+ - Read images into arrays and manipulate them.
+* Thank you!
+#+begin_latex
+ \begin{block}{}
+ \begin{center}
+ This spoken tutorial has been produced by the
+ \textcolor{blue}{FOSSEE} team, which is funded by the
+ \end{center}
+ \begin{center}
+ \textcolor{blue}{National Mission on Education through \\
+ Information \& Communication Technology \\
+ MHRD, Govt. of India}.
+ \end{center}
+ \end{block}
+#+end_latex
+
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/getting-started-sagenotebook/slides.tex Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,106 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%Tutorial slides on Python.
+%
+% Author: FOSSEE
+% Copyright (c) 2009, FOSSEE, IIT Bombay
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\documentclass[14pt,compress]{beamer}
+%\documentclass[draft]{beamer}
+%\documentclass[compress,handout]{beamer}
+%\usepackage{pgfpages}
+%\pgfpagesuselayout{2 on 1}[a4paper,border shrink=5mm]
+
+% Modified from: generic-ornate-15min-45min.de.tex
+\mode<presentation>
+{
+ \usetheme{Warsaw}
+ \useoutertheme{infolines}
+ \setbeamercovered{transparent}
+}
+
+\usepackage[english]{babel}
+\usepackage[latin1]{inputenc}
+%\usepackage{times}
+\usepackage[T1]{fontenc}
+
+\usepackage{ae,aecompl}
+\usepackage{mathpazo,courier,euler}
+\usepackage[scaled=.95]{helvet}
+
+\definecolor{darkgreen}{rgb}{0,0.5,0}
+
+\usepackage{listings}
+\lstset{language=Python,
+ basicstyle=\ttfamily\bfseries,
+ commentstyle=\color{red}\itshape,
+ stringstyle=\color{darkgreen},
+ showstringspaces=false,
+ keywordstyle=\color{blue}\bfseries}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% Macros
+\setbeamercolor{emphbar}{bg=blue!20, fg=black}
+\newcommand{\emphbar}[1]
+{\begin{beamercolorbox}[rounded=true]{emphbar}
+ {#1}
+ \end{beamercolorbox}
+}
+\newcounter{time}
+\setcounter{time}{0}
+\newcommand{\inctime}[1]{\addtocounter{time}{#1}{\tiny \thetime\ m}}
+
+\newcommand{\typ}[1]{\lstinline{#1}}
+
+\newcommand{\kwrd}[1]{ \texttt{\textbf{\color{blue}{#1}}} }
+
+% Title page
+\title{Your Title Here}
+
+\author[FOSSEE] {FOSSEE}
+
+\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay}
+\date{}
+
+% DOCUMENT STARTS
+\begin{document}
+
+\begin{frame}
+ \maketitle
+\end{frame}
+
+\begin{frame}[fragile]
+ \frametitle{Outline}
+ \begin{itemize}
+ \item
+ \end{itemize}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% All other slides here. %%
+%% The same slides will be used in a classroom setting. %%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\begin{frame}[fragile]
+ \frametitle{Summary}
+ \begin{itemize}
+ \item
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Thank you!}
+ \begin{block}{}
+ \begin{center}
+ This spoken tutorial has been produced by the
+ \textcolor{blue}{FOSSEE} team, which is funded by the
+ \end{center}
+ \begin{center}
+ \textcolor{blue}{National Mission on Education through \\
+ Information \& Communication Technology \\
+ MHRD, Govt. of India}.
+ \end{center}
+ \end{block}
+\end{frame}
+
+\end{document}
--- a/getting-started-strings.rst Tue Oct 12 17:15:11 2010 +0530
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,125 +0,0 @@
-Hello friends. Welcome to this spoken tutorial on Getting started with
-strings.
-
-{{{ Show the slide containing the title }}}
-
-{{{ Show the slide containing the outline }}}
-
-In this tutorial, we will learn what do we actually mean by strings in
-python, how python supports the use of strings. We will also learn
-some of the operations that can be performed on strings.
-
-{{{ Shift to terminal and start ipython }}}
-
-To begin with let us start ipython, by typing::
-
- ipython
-
-on the terminal
-
-So what are strings? In Python anything within either single quotes
-or double quotes or triple single quotes or triple double quotes are
-strings. This is true whatsoever, even if there is only one character
-within the quotes
-
-{{{ Type in ipython the following and read them as you type }}}::
-
- 'This is a string'
- "This is a string too'
- '''This is a string as well'''
- """This is also a string"""
- 'p'
-
-Having more than one control character to define strings come as very
-handy when one of the control characters itself is part of the
-string. For example::
-
- "Python's string manipulation functions are very useful"
-
-In this case we use single quote for apostrophe. If we had only single
-quote to define strings we should have a clumsy way of escaping the
-single quote character to make it part of the string. Hence this is a
-very handy feature.
-
-The triple quoted strings let us define multi-lines strings without
-using any escaping. Everything within the triple quotes is a single
-string no matter how many lines it extends::
-
- """Having more than one control character to define
- strings come as very handy when one of the control
- characters itself is part of the string."""
-
-We can assign this string to any variable::
-
- a = 'Hello, World!'
-
-Now 'a' is a string variable. String is a collection of characters. In
-addition string is an immutable collection. So all the operations that
-are applicable to any other immutable collection in Python works on
-string as well. So we can add two strings::
-
- a = 'Hello'
- b = 'World'
- c = a + ', ' + b + '!'
-
-We can add string variables as well as the strings themselves all in
-the same statement. The addition operation performs the concatenation
-of two strings.
-
-Similarly we can multiply a string with an integer::
-
- a = 'Hello'
- a * 5
-
-gives another string in which the original string 'Hello' is repeated
-5 times.
-
-Since strings are collections we can access individual items in the
-string using the subscripts::
-
- a[0]
-
-gives us the first character in the string. The indexing starts from 0
-for the first character up to n-1 for the last character. We can
-access the strings from the end using negative indices::
-
- a[-2]
-
-gives us second element from the end of the string
-
-Let us attempt to change one of the characters in a string::
-
- a = 'hello'
- a[0] = 'H'
-
-As said earlier, strings are immutable. We cannot manipulate the
-string. Although there are some methods which let us to manipulate the
-strings. We will look at them in the advanced session on strings. In
-addition to the methods that let us manipulate the strings we have
-methods like split which lets us break the string on the specified
-separator, the join method which lets us combine the list of strings
-into a single string based on the specified separator.
-
-{{{ Show summary slide }}}
-
-This brings us to the end of another session. In this tutorial session
-we learnt
-
- * How to define strings
- * Different types of defining a string
- * String concatenation and repeatition
- * Accessing individual elements of the string
- * Immutability of strings
-
-{{{ Show the "sponsored by FOSSEE" slide }}}
-
-This tutorial was created as a part of FOSSEE project, NME ICT, MHRD India
-
-Hope you have enjoyed and found it useful.
-Thankyou
-
-.. Author : Madhu
- Internal Reviewer 1 : [potential reviewer: Nishanth]
- Internal Reviewer 2 : [potential reviewer: Amit]
- External Reviewer :
-
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/getting-started-strings/questions.rst Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,80 @@
+Objective Questions
+-------------------
+
+.. A mininum of 8 questions here (along with answers)
+
+1. List the type of quotes that can be used to define strings.
+
+ Answer: 'single quotes', "double quotes",
+ '''triple single quotes'''
+ """triple double quotes"""
+
+#. Given the strings ``s`` and ``S``, ``s='Hello World'`` and
+ ``S="Hello World``. s and S are different strings. True or False?
+
+#. What is the output of::
+
+ s = 'It's all here'
+
+ Answer: ``SyntaxError``
+
+#. Write code to assign s, the string ``' is called the apostrophe``
+
+ Answer: ``s = "`is called the apostrophe"``
+
+#. Given strings s and t, ``s = "Hello"`` and ``t = "World"``. What is
+ the output of s + t?
+
+ Answer: HelloWorld
+
+#. Given strings s and t, ``s = "Hello"`` and ``t = "World"`` and an
+ integer r, ``r = 2``. What is the output of s * r + s * t?
+
+ Answer: HelloHelloWorldWorld
+
+#. Given strings s and t, ``s = "Hello"`` and ``t = "World"`` and an
+ integer r, ``r = 2``. What is the output of s * 'r' ?
+
+ Answer: TypeError - can't multiply a sequence by non-int
+
+#. Given the string ``s = "Hello"``, we wish to change it to
+ ``hello``. what is the result of::
+
+ s[0] = 'h'
+
+ Answer: TypeError - 'str' object does not support item assignment.
+
+#. Given the string ``s = "Hello"``, we wish to change it to
+ ``hello``. what is the result of::
+
+ s = "hello"
+
+ Answer: s is changed to "hello"
+
+#. Which type of string can be written in multiple lines, with line
+ breaks. (Note: more than one answer may be correct.)
+
+ #. triple double quoted strings
+ #. single quoted strings
+ #. double quoted strings
+ #. triple single quoted strings
+
+ Answer: triple double quoted strings and triple single quoted strings
+
+Larger Questions
+----------------
+
+.. A minimum of 2 questions here (along with answers)
+
+1. Given the string s, ``s = F.R.I.E.N.D.S``, obtain the string
+ "FRIENDS".
+
+ Answer::
+
+ s = s[0] + s[2] + s[4] + s[6] + s[8] + s[10] + s[12]
+
+2. Assign the string ``Today's Quote: "Don't believe in any quote,
+ including this."`` to the variable ``quote``.
+
+ Answer:
+ quote = """Today's Quote: "Don't believe in any quote, including this."""
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/getting-started-strings/quickref.tex Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,8 @@
+Creating a linear array:\\
+{\ex \lstinline| x = linspace(0, 2*pi, 50)|}
+
+Plotting two variables:\\
+{\ex \lstinline| plot(x, sin(x))|}
+
+Plotting two lists of equal length x, y:\\
+{\ex \lstinline| plot(x, y)|}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/getting-started-strings/script.rst Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,145 @@
+.. Objectives
+.. ----------
+
+.. At the end of this tutorial, you should know --
+
+.. 1. How to define strings
+.. #. Different ways of defining a string
+.. #. How to concatenate strings
+.. #. How to print a string repeatedly
+.. #. Accessing individual elements of the string
+.. #. Immutability of strings
+
+.. Prerequisites
+.. -------------
+
+.. 1. getting started with ipython
+
+.. Author : Madhu
+ Internal Reviewer :
+ External Reviewer :
+ Checklist OK? : <put date stamp here, if OK> [2010-10-05]
+
+Script
+------
+
+{{{ Show the slide containing the title }}}
+
+Hello friends. Welcome to this spoken tutorial on Getting started with
+strings.
+
+{{{ Show the slide containing the outline }}}
+
+In this tutorial, we will learn what do we actually mean by strings in
+python, how python supports the use of strings. We will also learn
+some of the operations that can be performed on strings.
+
+{{{ Shift to terminal and start ipython }}}
+
+To begin with let us start ipython, by typing::
+
+ ipython
+
+on the terminal
+
+So what are strings? In Python anything within either single quotes
+or double quotes or triple single quotes or triple double quotes are
+strings. This is true whatsoever, even if there is only one character
+within the quotes
+
+{{{ Type in ipython the following and read them as you type }}}::
+
+ 'This is a string'
+ "This is a string too'
+ '''This is a string as well'''
+ """This is also a string"""
+ 'p'
+
+Having more than one control character to define strings come as very
+handy when one of the control characters itself is part of the
+string. For example::
+
+ "Python's string manipulation functions are very useful"
+
+In this case we use single quote for apostrophe. If we had only single
+quote to define strings we should have a clumsy way of escaping the
+single quote character to make it part of the string. Hence this is a
+very handy feature.
+
+The triple quoted strings let us define multi-lines strings without
+using any escaping. Everything within the triple quotes is a single
+string no matter how many lines it extends::
+
+ """Having more than one control character to define
+ strings come as very handy when one of the control
+ characters itself is part of the string."""
+
+We can assign this string to any variable::
+
+ a = 'Hello, World!'
+
+Now 'a' is a string variable. String is a collection of characters. In
+addition string is an immutable collection. So all the operations that
+are applicable to any other immutable collection in Python works on
+string as well. So we can add two strings::
+
+ a = 'Hello'
+ b = 'World'
+ c = a + ', ' + b + '!'
+
+We can add string variables as well as the strings themselves all in
+the same statement. The addition operation performs the concatenation
+of two strings.
+
+Similarly we can multiply a string with an integer::
+
+ a = 'Hello'
+ a * 5
+
+gives another string in which the original string 'Hello' is repeated
+5 times.
+
+Since strings are collections we can access individual items in the
+string using the subscripts::
+
+ a[0]
+
+gives us the first character in the string. The indexing starts from 0
+for the first character up to n-1 for the last character. We can
+access the strings from the end using negative indices::
+
+ a[-2]
+
+gives us second element from the end of the string
+
+Let us attempt to change one of the characters in a string::
+
+ a = 'hello'
+ a[0] = 'H'
+
+As said earlier, strings are immutable. We cannot manipulate the
+string. Although there are some methods which let us to manipulate the
+strings. We will look at them in the advanced session on strings. In
+addition to the methods that let us manipulate the strings we have
+methods like split which lets us break the string on the specified
+separator, the join method which lets us combine the list of strings
+into a single string based on the specified separator.
+
+{{{ Show summary slide }}}
+
+This brings us to the end of another session. In this tutorial session
+we learnt
+
+ * How to define strings
+ * Different ways of defining a string
+ * String concatenation and repeatition
+ * Accessing individual elements of the string
+ * Immutability of strings
+
+{{{ Show the "sponsored by FOSSEE" slide }}}
+
+This tutorial was created as a part of FOSSEE project, NME ICT, MHRD India
+
+Hope you have enjoyed and found it useful.
+Thank you!
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/getting-started-strings/slides.org Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,123 @@
+#+LaTeX_CLASS: beamer
+#+LaTeX_CLASS_OPTIONS: [presentation]
+#+BEAMER_FRAME_LEVEL: 1
+
+#+BEAMER_HEADER_EXTRA: \usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent}
+#+COLUMNS: %45ITEM %10BEAMER_env(Env) %10BEAMER_envargs(Env Args) %4BEAMER_col(Col) %8BEAMER_extra(Extra)
+#+PROPERTY: BEAMER_col_ALL 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 :ETC
+
+#+LaTeX_CLASS: beamer
+#+LaTeX_CLASS_OPTIONS: [presentation]
+
+#+LaTeX_HEADER: \usepackage[english]{babel} \usepackage{ae,aecompl}
+#+LaTeX_HEADER: \usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet}
+
+#+LaTeX_HEADER: \usepackage{listings}
+
+#+LaTeX_HEADER:\lstset{language=Python, basicstyle=\ttfamily\bfseries,
+#+LaTeX_HEADER: commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen},
+#+LaTeX_HEADER: showstringspaces=false, keywordstyle=\color{blue}\bfseries}
+
+#+TITLE: Accessing parts of arrays
+#+AUTHOR: FOSSEE
+#+EMAIL:
+#+DATE:
+
+#+DESCRIPTION:
+#+KEYWORDS:
+#+LANGUAGE: en
+#+OPTIONS: H:3 num:nil toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t
+#+OPTIONS: TeX:t LaTeX:nil skip:nil d:nil todo:nil pri:nil tags:not-in-toc
+
+* Outline
+ - Manipulating one and multi dimensional arrays
+ - Access and change individual elements
+ - Access and change rows and columns
+ - Slicing and striding on arrays to access chunks
+ - Read images into arrays and manipulations
+* Sample Arrays
+ #+begin_src python
+ In []: A = array([12, 23, 34, 45, 56])
+
+ In []: C = array([[11, 12, 13, 14, 15],
+ [21, 22, 23, 24, 25],
+ [31, 32, 33, 34, 35],
+ [41, 42, 43, 44, 45],
+ [51, 52, 53, 54, 55]])
+
+ #+end_src
+* Question 1
+ Change the last column of ~C~ to zeroes.
+* Solution 1
+ #+begin_src python
+ In []: C[:, -1] = 0
+ #+end_src
+* Question 2
+ Change ~A~ to ~[11, 12, 13, 14, 15]~.
+* Solution 2
+ #+begin_src python
+ In []: A[:] = [11, 12, 13, 14, 15]
+ #+end_src
+* squares.png
+ #+begin_latex
+ \begin{center}
+ \includegraphics[scale=0.6]{squares}
+ \end{center}
+ #+end_latex
+* Question 3
+ - obtain ~[22, 23]~ from ~C~.
+ - obtain ~[11, 21, 31, 41]~ from ~C~.
+ - obtain ~[21, 31, 41, 0]~.
+* Solution 3
+ #+begin_src python
+ In []: C[1, 1:3]
+ In []: C[0:4, 0]
+ In []: C[1:5, 0]
+ #+end_src
+* Question 4
+ Obtain ~[[23, 24], [33, -34]]~ from ~C~
+* Solution 4
+ #+begin_src python
+ In []: C[1:3, 2:4]
+ #+end_src
+* Question 5
+ Obtain the square in the center of the image
+* Solution 5
+ #+begin_src python
+ In []: imshow(I[75:225, 75:225])
+ #+end_src
+* Question 6
+ Obtain the following
+ #+begin_src python
+ [[12, 0], [42, 0]]
+ [[12, 13, 14], [0, 0, 0]]
+ #+end_src
+
+* Solution 6
+ #+begin_src python
+ In []: C[::3, 1::3]
+ In []: C[::4, 1:4]
+ #+end_src
+* Summary
+ You should now be able to --
+ - Manipulate 1D \& Multi dimensional arrays
+ - Access and change individual elements
+ - Access and change rows and columns
+ - Slice and stride on arrays
+ - Read images into arrays and manipulate them.
+* Thank you!
+#+begin_latex
+ \begin{block}{}
+ \begin{center}
+ This spoken tutorial has been produced by the
+ \textcolor{blue}{FOSSEE} team, which is funded by the
+ \end{center}
+ \begin{center}
+ \textcolor{blue}{National Mission on Education through \\
+ Information \& Communication Technology \\
+ MHRD, Govt. of India}.
+ \end{center}
+ \end{block}
+#+end_latex
+
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/getting-started-strings/slides.tex Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,106 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%Tutorial slides on Python.
+%
+% Author: FOSSEE
+% Copyright (c) 2009, FOSSEE, IIT Bombay
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\documentclass[14pt,compress]{beamer}
+%\documentclass[draft]{beamer}
+%\documentclass[compress,handout]{beamer}
+%\usepackage{pgfpages}
+%\pgfpagesuselayout{2 on 1}[a4paper,border shrink=5mm]
+
+% Modified from: generic-ornate-15min-45min.de.tex
+\mode<presentation>
+{
+ \usetheme{Warsaw}
+ \useoutertheme{infolines}
+ \setbeamercovered{transparent}
+}
+
+\usepackage[english]{babel}
+\usepackage[latin1]{inputenc}
+%\usepackage{times}
+\usepackage[T1]{fontenc}
+
+\usepackage{ae,aecompl}
+\usepackage{mathpazo,courier,euler}
+\usepackage[scaled=.95]{helvet}
+
+\definecolor{darkgreen}{rgb}{0,0.5,0}
+
+\usepackage{listings}
+\lstset{language=Python,
+ basicstyle=\ttfamily\bfseries,
+ commentstyle=\color{red}\itshape,
+ stringstyle=\color{darkgreen},
+ showstringspaces=false,
+ keywordstyle=\color{blue}\bfseries}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% Macros
+\setbeamercolor{emphbar}{bg=blue!20, fg=black}
+\newcommand{\emphbar}[1]
+{\begin{beamercolorbox}[rounded=true]{emphbar}
+ {#1}
+ \end{beamercolorbox}
+}
+\newcounter{time}
+\setcounter{time}{0}
+\newcommand{\inctime}[1]{\addtocounter{time}{#1}{\tiny \thetime\ m}}
+
+\newcommand{\typ}[1]{\lstinline{#1}}
+
+\newcommand{\kwrd}[1]{ \texttt{\textbf{\color{blue}{#1}}} }
+
+% Title page
+\title{Your Title Here}
+
+\author[FOSSEE] {FOSSEE}
+
+\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay}
+\date{}
+
+% DOCUMENT STARTS
+\begin{document}
+
+\begin{frame}
+ \maketitle
+\end{frame}
+
+\begin{frame}[fragile]
+ \frametitle{Outline}
+ \begin{itemize}
+ \item
+ \end{itemize}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% All other slides here. %%
+%% The same slides will be used in a classroom setting. %%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\begin{frame}[fragile]
+ \frametitle{Summary}
+ \begin{itemize}
+ \item
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Thank you!}
+ \begin{block}{}
+ \begin{center}
+ This spoken tutorial has been produced by the
+ \textcolor{blue}{FOSSEE} team, which is funded by the
+ \end{center}
+ \begin{center}
+ \textcolor{blue}{National Mission on Education through \\
+ Information \& Communication Technology \\
+ MHRD, Govt. of India}.
+ \end{center}
+ \end{block}
+\end{frame}
+
+\end{document}
--- a/manipulating-lists.rst Tue Oct 12 17:15:11 2010 +0530
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,180 +0,0 @@
-Hello friends. Welcome to this spoken tutorial on Getting started with
-strings.
-
-{{{ Show the slide containing the title }}}
-
-{{{ Show the slide containing the outline }}}
-
-We have already learnt a lot about Lists in Python. In this tutorial,
-we will learn more about advanced features of Lists in Python. We will
-see in detail how to concatenate two lists, slicing and striding of
-lists, methods to sort and reverse the list.
-
-{{{ Shift to terminal and start ipython }}}
-
-To begin with let us start ipython, by typing::
-
- ipython
-
-on the terminal
-
-We already know what Lists are in Python, how to access individual
-elements in the list and some of the functions that can be run on the
-lists like max, min, sum len and so on. Now let us learn some of the
-basic operations that can be performed on Lists.
-
-We already know how to access individual elements in a List. But what
-if we have a scenario where we need to get a part of the entire list
-or what we call as a slice of the list? Python supports slicing on
-lists. Let us say I have the list::
-
- primes = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29]
-
-To obtain the all the primes between 10 and 20 from the above list of
-primes we say::
-
- primes[4:8]
-
-This gives us all the elements in the list starting from the element
-with the index 4 which is 11 in our list upto the element with index 8
-in the list but not including the eigth element. So we obtain a slice
-starting from 11 upto 19th. It is a very important to remember that
-when ever we specify a range of elements in Python the start index is
-included and end index is not included. So in the above case, 11 which
-was the element with the index 4 was included but 23 which was the
-element with index 8 was exluded.
-
-Generalizing, we can obtain a slice of the list "p" from the index
-"start" upto the index "end" but excluding "end" with the following
-syntax
-
-{{{ Show the slide containing p[start:stop] }}}
-
-By default the slice fetches all the elements between start and stop
-including start but not stop. So as to say we obtain all the elements
-between start and stop in steps of one. Python also provides us the
-functionality to specify the steps in which the slice must be
-obtained. Say we have::
-
- num = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]
-
-If we want to obtain all the odd numbers less than 10 from the list
-"num" we have to start from element with index 1 upto the index 10 in
-steps of 2::
-
- num[1:10:2]
-
-So if we don't specify the step it is by default 1. Similary there are
-default values for start and stop indices as well. If we don't specify
-the start index it is implicitly taken as the first element of the
-list::
-
- num[:10]
-
-This gives us all the elements from the beginning upto the 10th
-element but not including the 10th element in the list "num". Similary
-if the stop index is not specified it is implicitly assumed to be the
-end of the list, including the last element of the list::
-
- num[10:]
-
-gives all the elements starting from the 10th element in the list
-"num" upto the final element including that last element. Now::
-
- num[::2]
-
-gives us all the even numbers in the list "num".
-
-The other basic operation that we can perform on list is concatenation
-of two or more lists. We can combine two lists by using the "plus"
-operator. Say we have
-
-{{{ Read as you type }}}::
-
- a = [1, 2, 3, 4]
- b = [4, 5, 6, 7]
- a + b
-
-When we concatenate lists using the "plus" operator we get a new
-list. We can store this list in a new variable::
-
- c = a + b
- c
-
-It is important to observe that the "plus" operator always returns a
-new list without touching anything in the existing lists which are the
-operands of the concatenation operation.
-
-We know that list is a collection of data. Whenever we have a
-collection we run into situations where we want to start the
-collection. Lists support sort method which sorts the list inplace::
-
- a = [5, 1, 6, 7, 7, 10]
- a.sort()
-
-Now the contents of the list "a" will be::
-
- a
- [1, 5, 6, 7, 7, 10]
-
-Since the sort method sorts the list inplace the original list we had
-is overwritten or replaced. We have no way to obtain the original list
-back. One way to avoid this is to keep a copy of the original list in
-another variable and run the sort method on the list. However Python
-also provides a built-in function called sorted which sorts the list
-which is passed as an argument to it and returns a new sorted list::
-
- a = [5, 1, 6, 7, 7, 10]
- sorted(a)
-
-We can store this sorted list another list variable::
-
- sa = sorted(a)
-
-Similarly to perform certain operations on the list we would like to
-reverse the list. Python provides reverse method which again reverses
-the list inplace::
-
- a = [1, 2, 3, 4, 5]
- a.reverse()
-
-reverses the list "a" and stores the reversed list inplace i.e. in "a"
-itself. Lets see the list "a"::
-
- a
- [5, 4, 3, 2, 1]
-
-But again the original list is lost. If we want to obtain the reverse
-of a list keeping the original list intact we can use the Python
-built-in function reversed. reversed function returns a new list which
-is the reverse of the list which was passed as the argument to the
-reversed function::
-
- a = [1, 2, 3, 4, 5]
- reversed(a)
-
-We can also store this new reversed list in another list variable.
-
-{{{ Show summary slide }}}
-
-This brings us to the end of another session. In this tutorial session
-we learnt
-
- * How to define strings
- * Different types of defining a string
- * String concatenation and repeatition
- * Accessing individual elements of the string
- * Immutability of strings
-
-{{{ Show the "sponsored by FOSSEE" slide }}}
-
-This tutorial was created as a part of FOSSEE project, NME ICT, MHRD India
-
-Hope you have enjoyed and found it useful.
-Thankyou
-
-.. Author : Madhu
- Internal Reviewer 1 : [potential reviewer: Nishanth]
- Internal Reviewer 2 : [potential reviewer: Amit]
- External Reviewer :
-
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/manipulating-lists/questions.rst Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,72 @@
+Objective Questions
+-------------------
+
+.. A mininum of 8 questions here (along with answers)
+
+1. Given the list primes, ``primes = [2, 3, 5, 7, 11, 13, 17, 19, 23,
+ 29]``, How do you obtain the last 4 primes?
+
+ Answer: primes[-4:]
+
+#. Given the list primes, ``primes = [2, 3, 5, 7, 11, 13, 17, 19, 23,
+ 29]``, What is the output of ``primes[::5]``?
+
+ Answer: ``[2, 13]``
+
+#. Given a list, p, of unknown length, obtain the first 3 (or all, if
+ there are fewer) characters of it.
+
+ Answer: p[:3]
+
+#. The method ``reverse`` reverses a list in-place. True or False?
+
+ Answer: True
+
+#. ``reversed`` function reverses a list in-place. True or False?
+
+ Answer: False
+
+#. Given the list ``p = [1, 2, 3]``. p[4] produces an IndexError. True
+ or False?
+
+ Answer: True
+
+#. Given the list ``p = [1, 2, 3]``. p[:4] produces an IndexError. True
+ or False?
+
+ Answer: False
+
+#. Given the list primes, ``primes = [2, 3, 5, 7, 11]``, What is the
+ output of ``primes[::-1]``?
+
+ Answer: [11, 7, 5, 3, 2]
+
+#. Given the list primes, ``primes = [2, 3, 5, 7, 11]``, What is the
+ output of ``primes[::-3]``?
+
+ Answer: [11, 3]
+
+
+Larger Questions
+----------------
+
+.. A minimum of 2 questions here (along with answers)
+
+#. Given a list p. Append it's reverse to itself.
+
+ Answer::
+
+ p = p + reversed(p)
+
+
+#. Marks is a list containing the roll numbers of students followed by
+ marks. [This is not a recommended way to hold the marks details,
+ but the teacher knows only so much Python!] Now she wants to get
+ the average of the marks. Help her do it.
+
+ Answer::
+
+ marks = [1, 9, 2, 8, 3, 3, 4, 10, 5, 2]
+ average = sum(marks[1::2])/len(marks[1::2])
+
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/manipulating-lists/quickref.tex Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,8 @@
+Creating a linear array:\\
+{\ex \lstinline| x = linspace(0, 2*pi, 50)|}
+
+Plotting two variables:\\
+{\ex \lstinline| plot(x, sin(x))|}
+
+Plotting two lists of equal length x, y:\\
+{\ex \lstinline| plot(x, y)|}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/manipulating-lists/script.rst Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,196 @@
+.. Objectives
+.. ----------
+
+.. Clearly state the objectives of the LO (along with RBT level)
+
+.. Prerequisites
+.. -------------
+
+.. 1. getting started with lists
+.. 2.
+.. 3.
+
+.. Author : Madhu
+ Internal Reviewer :
+ External Reviewer :
+ Checklist OK? : <put date stamp here, if OK> [2010-10-05]
+
+Script
+------
+
+{{{ Show the slide containing the title }}}
+
+Hello friends. Welcome to this spoken tutorial on Manipulating Lists.
+
+
+{{{ Show the slide containing the outline }}}
+
+We have already learnt a lot about Lists in Python. In this tutorial,
+we will learn more about advanced features of Lists in Python. We will
+see in detail how to concatenate two lists, slicing and striding of
+lists, methods to sort and reverse the list.
+
+{{{ Shift to terminal and start ipython }}}
+
+To begin with let us start ipython, by typing::
+
+ ipython
+
+on the terminal
+
+We already know what Lists are in Python, how to access individual
+elements in the list and some of the functions that can be run on the
+lists like max, min, sum len and so on. Now let us learn some of the
+basic operations that can be performed on Lists.
+
+We already know how to access individual elements in a List. But what
+if we have a scenario where we need to get a part of the entire list
+or what we call as a slice of the list? Python supports slicing on
+lists. Let us say I have the list::
+
+ primes = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29]
+
+To obtain the all the primes between 10 and 20 from the above list of
+primes we say::
+
+ primes[4:8]
+
+This gives us all the elements in the list starting from the element
+with the index 4 which is 11 in our list upto the element with index 8
+in the list but not including the eigth element. So we obtain a slice
+starting from 11 upto 19th. It is a very important to remember that
+when ever we specify a range of elements in Python the start index is
+included and end index is not included. So in the above case, 11 which
+was the element with the index 4 was included but 23 which was the
+element with index 8 was excluded.
+
+Generalizing, we can obtain a slice of the list "p" from the index
+"start" upto the index "end" but excluding "end" with the following
+syntax
+
+{{{ Show the slide containing p[start:stop] }}}
+
+By default the slice fetches all the elements between start and stop
+including start but not stop. So as to say we obtain all the elements
+between start and stop in steps of one. Python also provides us the
+functionality to specify the steps in which the slice must be
+obtained. Say we have::
+
+ num = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]
+
+If we want to obtain all the odd numbers less than 10 from the list
+"num" we have to start from element with index 1 upto the index 10 in
+steps of 2::
+
+ num[1:10:2]
+
+So if we don't specify the step it is by default 1. Similary there are
+default values for start and stop indices as well. If we don't specify
+the start index it is implicitly taken as the first element of the
+list::
+
+ num[:10]
+
+This gives us all the elements from the beginning upto the 10th
+element but not including the 10th element in the list "num". Similary
+if the stop index is not specified it is implicitly assumed to be the
+end of the list, including the last element of the list::
+
+ num[10:]
+
+gives all the elements starting from the 10th element in the list
+"num" upto the final element including that last element. Now::
+
+ num[::2]
+
+gives us all the even numbers in the list "num".
+
+The other basic operation that we can perform on list is concatenation
+of two or more lists. We can combine two lists by using the "plus"
+operator. Say we have
+
+{{{ Read as you type }}}::
+
+ a = [1, 2, 3, 4]
+ b = [4, 5, 6, 7]
+ a + b
+
+When we concatenate lists using the "plus" operator we get a new
+list. We can store this list in a new variable::
+
+ c = a + b
+ c
+
+It is important to observe that the "plus" operator always returns a
+new list without touching anything in the existing lists which are the
+operands of the concatenation operation.
+
+We know that list is a collection of data. Whenever we have a
+collection we run into situations where we want to start the
+collection. Lists support sort method which sorts the list inplace::
+
+ a = [5, 1, 6, 7, 7, 10]
+ a.sort()
+
+Now the contents of the list "a" will be::
+
+ a
+ [1, 5, 6, 7, 7, 10]
+
+Since the sort method sorts the list inplace the original list we had
+is overwritten or replaced. We have no way to obtain the original list
+back. One way to avoid this is to keep a copy of the original list in
+another variable and run the sort method on the list. However Python
+also provides a built-in function called sorted which sorts the list
+which is passed as an argument to it and returns a new sorted list::
+
+ a = [5, 1, 6, 7, 7, 10]
+ sorted(a)
+
+We can store this sorted list another list variable::
+
+ sa = sorted(a)
+
+Similarly to perform certain operations on the list we would like to
+reverse the list. Python provides reverse method which again reverses
+the list inplace::
+
+ a = [1, 2, 3, 4, 5]
+ a.reverse()
+
+reverses the list "a" and stores the reversed list inplace i.e. in "a"
+itself. Lets see the list "a"::
+
+ a
+ [5, 4, 3, 2, 1]
+
+But again the original list is lost. If we want to obtain the reverse
+of a list keeping the original list intact we can use the Python
+built-in function reversed. reversed function returns a new list which
+is the reverse of the list which was passed as the argument to the
+reversed function::
+
+ a = [1, 2, 3, 4, 5]
+ reversed(a)
+
+We can also store this new reversed list in another list variable.
+
+{{{ Show summary slide }}}
+
+This brings us to the end of another session. In this tutorial session
+we learnt
+
+ * How to define strings
+ * Different types of defining a string
+ * String concatenation and repeatition
+ * Accessing individual elements of the string
+ * Immutability of strings
+
+{{{ Show the "sponsored by FOSSEE" slide }}}
+
+This tutorial was created as a part of FOSSEE project, NME ICT, MHRD India
+
+Hope you have enjoyed and found it useful.
+Thank you!
+
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/manipulating-lists/slides.org Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,123 @@
+#+LaTeX_CLASS: beamer
+#+LaTeX_CLASS_OPTIONS: [presentation]
+#+BEAMER_FRAME_LEVEL: 1
+
+#+BEAMER_HEADER_EXTRA: \usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent}
+#+COLUMNS: %45ITEM %10BEAMER_env(Env) %10BEAMER_envargs(Env Args) %4BEAMER_col(Col) %8BEAMER_extra(Extra)
+#+PROPERTY: BEAMER_col_ALL 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 :ETC
+
+#+LaTeX_CLASS: beamer
+#+LaTeX_CLASS_OPTIONS: [presentation]
+
+#+LaTeX_HEADER: \usepackage[english]{babel} \usepackage{ae,aecompl}
+#+LaTeX_HEADER: \usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet}
+
+#+LaTeX_HEADER: \usepackage{listings}
+
+#+LaTeX_HEADER:\lstset{language=Python, basicstyle=\ttfamily\bfseries,
+#+LaTeX_HEADER: commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen},
+#+LaTeX_HEADER: showstringspaces=false, keywordstyle=\color{blue}\bfseries}
+
+#+TITLE: Accessing parts of arrays
+#+AUTHOR: FOSSEE
+#+EMAIL:
+#+DATE:
+
+#+DESCRIPTION:
+#+KEYWORDS:
+#+LANGUAGE: en
+#+OPTIONS: H:3 num:nil toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t
+#+OPTIONS: TeX:t LaTeX:nil skip:nil d:nil todo:nil pri:nil tags:not-in-toc
+
+* Outline
+ - Manipulating one and multi dimensional arrays
+ - Access and change individual elements
+ - Access and change rows and columns
+ - Slicing and striding on arrays to access chunks
+ - Read images into arrays and manipulations
+* Sample Arrays
+ #+begin_src python
+ In []: A = array([12, 23, 34, 45, 56])
+
+ In []: C = array([[11, 12, 13, 14, 15],
+ [21, 22, 23, 24, 25],
+ [31, 32, 33, 34, 35],
+ [41, 42, 43, 44, 45],
+ [51, 52, 53, 54, 55]])
+
+ #+end_src
+* Question 1
+ Change the last column of ~C~ to zeroes.
+* Solution 1
+ #+begin_src python
+ In []: C[:, -1] = 0
+ #+end_src
+* Question 2
+ Change ~A~ to ~[11, 12, 13, 14, 15]~.
+* Solution 2
+ #+begin_src python
+ In []: A[:] = [11, 12, 13, 14, 15]
+ #+end_src
+* squares.png
+ #+begin_latex
+ \begin{center}
+ \includegraphics[scale=0.6]{squares}
+ \end{center}
+ #+end_latex
+* Question 3
+ - obtain ~[22, 23]~ from ~C~.
+ - obtain ~[11, 21, 31, 41]~ from ~C~.
+ - obtain ~[21, 31, 41, 0]~.
+* Solution 3
+ #+begin_src python
+ In []: C[1, 1:3]
+ In []: C[0:4, 0]
+ In []: C[1:5, 0]
+ #+end_src
+* Question 4
+ Obtain ~[[23, 24], [33, -34]]~ from ~C~
+* Solution 4
+ #+begin_src python
+ In []: C[1:3, 2:4]
+ #+end_src
+* Question 5
+ Obtain the square in the center of the image
+* Solution 5
+ #+begin_src python
+ In []: imshow(I[75:225, 75:225])
+ #+end_src
+* Question 6
+ Obtain the following
+ #+begin_src python
+ [[12, 0], [42, 0]]
+ [[12, 13, 14], [0, 0, 0]]
+ #+end_src
+
+* Solution 6
+ #+begin_src python
+ In []: C[::3, 1::3]
+ In []: C[::4, 1:4]
+ #+end_src
+* Summary
+ You should now be able to --
+ - Manipulate 1D \& Multi dimensional arrays
+ - Access and change individual elements
+ - Access and change rows and columns
+ - Slice and stride on arrays
+ - Read images into arrays and manipulate them.
+* Thank you!
+#+begin_latex
+ \begin{block}{}
+ \begin{center}
+ This spoken tutorial has been produced by the
+ \textcolor{blue}{FOSSEE} team, which is funded by the
+ \end{center}
+ \begin{center}
+ \textcolor{blue}{National Mission on Education through \\
+ Information \& Communication Technology \\
+ MHRD, Govt. of India}.
+ \end{center}
+ \end{block}
+#+end_latex
+
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/manipulating-lists/slides.tex Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,106 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%Tutorial slides on Python.
+%
+% Author: FOSSEE
+% Copyright (c) 2009, FOSSEE, IIT Bombay
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\documentclass[14pt,compress]{beamer}
+%\documentclass[draft]{beamer}
+%\documentclass[compress,handout]{beamer}
+%\usepackage{pgfpages}
+%\pgfpagesuselayout{2 on 1}[a4paper,border shrink=5mm]
+
+% Modified from: generic-ornate-15min-45min.de.tex
+\mode<presentation>
+{
+ \usetheme{Warsaw}
+ \useoutertheme{infolines}
+ \setbeamercovered{transparent}
+}
+
+\usepackage[english]{babel}
+\usepackage[latin1]{inputenc}
+%\usepackage{times}
+\usepackage[T1]{fontenc}
+
+\usepackage{ae,aecompl}
+\usepackage{mathpazo,courier,euler}
+\usepackage[scaled=.95]{helvet}
+
+\definecolor{darkgreen}{rgb}{0,0.5,0}
+
+\usepackage{listings}
+\lstset{language=Python,
+ basicstyle=\ttfamily\bfseries,
+ commentstyle=\color{red}\itshape,
+ stringstyle=\color{darkgreen},
+ showstringspaces=false,
+ keywordstyle=\color{blue}\bfseries}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% Macros
+\setbeamercolor{emphbar}{bg=blue!20, fg=black}
+\newcommand{\emphbar}[1]
+{\begin{beamercolorbox}[rounded=true]{emphbar}
+ {#1}
+ \end{beamercolorbox}
+}
+\newcounter{time}
+\setcounter{time}{0}
+\newcommand{\inctime}[1]{\addtocounter{time}{#1}{\tiny \thetime\ m}}
+
+\newcommand{\typ}[1]{\lstinline{#1}}
+
+\newcommand{\kwrd}[1]{ \texttt{\textbf{\color{blue}{#1}}} }
+
+% Title page
+\title{Your Title Here}
+
+\author[FOSSEE] {FOSSEE}
+
+\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay}
+\date{}
+
+% DOCUMENT STARTS
+\begin{document}
+
+\begin{frame}
+ \maketitle
+\end{frame}
+
+\begin{frame}[fragile]
+ \frametitle{Outline}
+ \begin{itemize}
+ \item
+ \end{itemize}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% All other slides here. %%
+%% The same slides will be used in a classroom setting. %%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\begin{frame}[fragile]
+ \frametitle{Summary}
+ \begin{itemize}
+ \item
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Thank you!}
+ \begin{block}{}
+ \begin{center}
+ This spoken tutorial has been produced by the
+ \textcolor{blue}{FOSSEE} team, which is funded by the
+ \end{center}
+ \begin{center}
+ \textcolor{blue}{National Mission on Education through \\
+ Information \& Communication Technology \\
+ MHRD, Govt. of India}.
+ \end{center}
+ \end{block}
+\end{frame}
+
+\end{document}
--- a/multiple-plots.rst Tue Oct 12 17:15:11 2010 +0530
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,362 +0,0 @@
-Hello friends. Welcome to this spoken tutorial on Multiple plots.
-
-{{{ Show the slide containing the title }}}
-
-{{{ Show the slide containing the outline }}}
-
-In this tutorial, we will learn how to draw more than one plot, how to
-add legends to each plot to indicate what each plot represents. We
-will also learn how to switch between the plots and create multiple
-plots with different regular axes which are also called as subplots.
-
-.. #[Nishanth]: See diff - edited a grammatical mistake
-.. #[Madhu: Done]
-
-{{{ Shift to terminal and start ipython -pylab }}}
-
-To begin with let us start ipython with pylab, by typing::
-
- ipython -pylab
-
-on the terminal
-
-Let us first create set of points for our plot. For this we will use
-the command called linspace::
-
- x = linspace(0, 50, 10)
-
-linspace command creates 10 points in the interval between 0 and 50
-both inclusive. We assign these values to a variable called x.
-
-.. #[Nishanth]: pre requisite for this LO is basic plotting which
- covers linspace and plot. So you may not need to
- specify all that again. But not a problem if it is
- there also.
-.. #[Madhu: Since I thought the LOs are disconnected, I thought it is
- better to give a very short intro to it]
-
-Now let us draw a plot simple sine plot using these points::
-
- plot(x, sin(x))
-
-This should give us a nice sine plot.
-
-{{{ Switch to the plot window }}}
-
-Oh! wait! Is that a nice sine plot? Does a sine plot actually look
-like that? We know that a sine plot is a smooth curve. Is it not? What
-really caused this?
-
-.. #[Nishanth]: See diff
-.. #[Madhu: Done]
-
-{{{ pause for a while }}}
-
-A small investigation on linspace tells us that we chose too few
-points in a large interval between 0 and 50 for the curve to be
-smooth. This should also indicate that the plot command actually plots
-the set of points given by x and sin(x) and it doesn't plot the
-analytical function itself i.e. it plots the points given by
-Analytical functions. So now let us use linspace again to get 500
-points between 0 and 100 and draw the sine plot
-
-.. #[Nishanth]: Here specify that when we do plot(x, sin(x)
- it is actually plotting two sets of points
- and not analytical functions. Hence the sharp
- curve.
-.. #[Madhu: Incorporated]
-
-{{{ Switch to ipython andtype }}} ::
-
- y = linspace(0, 50, 500)
- plot(y, sin(y))
-
-{{{ Change to the plot window }}}
-
-Now we see what we remember as a sine plot. A smooth curve. If we
-carefully notice we also have two plots now one overlaid upon
-another. In pylab, by default all the plots are overlaid.
-
-Since we have two plots now overlaid upon each other we would like to
-have a way to indicate what each plot represents to distinguish
-between them. This is accomplished using legends. Equivalently, the
-legend command does this for us
-
-{{{ Switch to ipython }}}::
-
- legend(['sin(x)', 'cos(x)'])
-
-.. #[Nishanth]: This legend may go up in the script. May be before
- introducing the figure command itself.
-.. #[Madhu: brought up]
-
-The legend command takes a single list of parameters where each
-parameter is the text indicating the plots in the order of their
-serial number.
-
-{{{ Switch to plot window }}}
-
-Now we can see the legends being displayed for the respective sine and
-cosine plots on the plot area.
-
-We have learnt quite a lot of things now, so let us take up an
-exercise problem.
-
-%% 1 %% Draw two plots overlaid upon each other, with the first plot
- being a parabola of the form y = 4(x ^ 2) and the second being a
- straight line of the form y = 2x + 3 in the interval -5 to 5. Use
- colors to differentiate between the plots and use legends to
- indicate what each plot is doing.
-
-{{{ pause for a while and continue from paused state }}}
-
-We can obtain the two plots in different colors using the following
-commands::
-
- x = linspace(-5, 5, 100)
- plot(x, 4 * (x * x), 'b')
- plot(x, (2 * x) + 3, 'g')
-
-Now we can use the legend command as::
-
- legend(['Parabola', 'Straight Line'])
-
-Or we can also just give the equations of the plot::
-
- legend(['y = 4(x ^ 2)', 'y = 2x + 3'])
-
-We now know how to draw multiple plots and use legends to indicate
-which plot represents what function, but we would like to have more
-control over the plots we draw. Like switch between them, perform some
-operations or labelling on them individually and so on. Let us see how
-to accomplish this. Before we move on, let us clear our screen.
-
-{{{ Switch to ipython }}}::
-
- clf()
-
-To accomplishing more control over individual plots we use the figure
-command::
-
- x = linspace(0, 50, 500)
- figure(1)
- plot(x, sin(x), 'b')
- figure(2)
- plot(x, cos(x), 'g')
-
-{{{ Switch to plot window }}}
-
-Now we have two plots, a sine plot and a cosine plot in two different
-figures.
-
-.. #[Nishanth]: figure(1) and figure(2) give two different plots.
- The remaining script moves on the fact that they
- give overlaid plots which is not the case.
- So clear the figure and plot cos and sin without
- introducing figure command. Then introduce legend
- and finish off the everything on legend.
- Then introduce figure command.
-
-.. #[Madhu: I have just moved up the text about legend command. I
- think that should take care of what you suggested. If there is
- some mistake with it, Punch please let me know in your next
- review.]
-
-{{{ Have both plot window and ipython side by side }}}
-
-The figure command takes an integer as an argument which is the serial
-number of the plot. This selects the corresponding plot. All the plot
-commands we run after this are applied to the selected plot. In this
-example figure 1 is the sine plot and figure 2 is the cosine plot. We
-can, for example, save each plot separately
-
-{{{ Switch to ipython }}}::
-
- savefig('/home/user/cosine.png')
- figure(1)
- title('sin(y)')
- savefig('/home/user/sine.png')
-
-{{{ Have both plot window and ipython side by side }}}
-
-We also titled the our first plot as 'sin(y)' which we did not do for
-the second plot.
-
-Let us attempt another exercise problem
-
-%% 2 %% Draw a line of the form y = x as one figure and another line
- of the form y = 2x + 3. Switch back to the first figure, annotate
- the x and y intercepts. Now switch to the second figure and
- annotate its x and y intercepts. Save each of them.
-
-{{{ Pause for a while and continue from the paused state }}}
-
-To solve this problem we should first create the first figure using
-the figure command. Before that, let us first run clf command to make
-sure all the previous plots are cleared::
-
- clf()
- figure(1)
- x = linspace(-5, 5, 100)
- plot(x, x)
-
-Now we can use figure command to create second plotting area and plot
-the figure::
-
- figure(2)
- plot(x, ((2 * x) + 3))
-
-Now to switch between the figures we can use figure command. So let us
-switch to figure 1. We are asked to annotate x and y intercepts of the
-figure 1 but since figure 1 passes through origin we will have to
-annotate the origin. We will annotate the intercepts for the second
-figure and save them as follows::
-
- figure(1)
- annotate('Origin', xy=(0.0, 0.0)
- figure(2)
- annotate('x-intercept', xy=(0, 3))
- annotate('y-intercept', xy=(0, -1.5))
- savefig('/home/fossee/plot2.png')
- figure(1)
- savefig('/home/fossee/plot1.png')
-
-At times we run into situations where we want to compare two plots and
-in such cases we want to draw both the plots in the same plotting
-area. The situation is such that the two plots have different regular
-axes which means we cannot draw overlaid plots. In such cases we can
-draw subplots.
-
-We use subplot command to accomplish this
-
-{{{ Switch to ipython }}}::
-
- subplot(2, 1, 1)
-
-subplot command takes three arguments, the first being the number of
-rows of subplots that must be created,
-
-{{{ Have both plot window and ipython side by side }}}
-
-in this case we have 2 so it spilts the plotting area horizontally for
-two subplots. The second argument specifies the number of coloumns of
-subplots that must be created. We passed 1 as the argument so the
-plotting area won't be split vertically and the last argument
-specifies what subplot must be created now in the order of the serial
-number. In this case we passed 1 as the argument, so the first subplot
-that is top half is created. If we execute the subplot command as
-
-{{{ Switch to ipython }}}::
-
- subplot(2, 1, 2)
-
-{{{ Switch to plot window }}}
-
-The lower subplot is created. Now we can draw plots in each of the
-subplot area using the plot command.
-
-{{{ Switch to ipython }}}::
-
- x = linspace(0, 50, 500)
- plot(x, cos(x))
- subplot(2, 1, 1)
- y = linspace(0, 5, 100)
- plot(y, y ** 2)
-
-{{{ Have both plot window and ipython side by side }}}
-
-This created two plots one in each of the subplot area. The top
-subplot holds a parabola and the bottom subplot holds a cosine
-curve.
-
-As seen here we can use subplot command to switch between the subplot
-as well, but we have to use the same arguments as we used to create
-that subplot, otherwise the previous subplot at that place will be
-automatically erased. It is clear from the two subplots that both have
-different regular axes. For the cosine plot x-axis varies from 0 to
-100 and y-axis varies from 0 to 1 where as for the parabolic plot the
-x-axis varies from 0 to 10 and y-axis varies from 0 to 100
-
-.. #[Nishanth]: stress on the similarity between subplot and figure
- commands
-
-.. #[Madhu: I think they are not really similar. Trying to bring in
- the similarity will confuse people I think.]
-
-%% 3 %% We know that the Pressure, Volume and Temperatures are held by
-the equation PV = nRT where nR is a constant. Let us assume nR = .01
-Joules/Kelvin and T = 200K. V can be in the range from 21cc to
-100cc. Draw two different plots as subplots, one being the Pressure
-versus Volume plot and the other being Pressure versus Temparature
-plot.
-
-{{{ Pause for a while and continue }}}
-
-To start with, we have been given the range of Volume using which we
-can define the variable V::
-
- V = linspace(21, 100, 500)
-
-Now we can create first subplot and draw Pressure versus Volume graph
-using this V. We know that nRT is a constant which is equal to 2.0
-since nR = 0.01 Joules/Kelvin and T = 200 Kelvin::
-
- subplot(2, 1, 1)
- plot(V, 2.0/V)
-
-Now we can create the second subplot and draw the Pressure versus
-Temparature plot as follows::
-
- subplot(2, 1, 2)
- plot(200, 2.0/V)
-
-Unfortunately we have an error now, telling x and y dimensions don't
-match. This is because our V contains a set of values as returned by
-linspace and hence 2.0/V which is the pressure also contains a set of
-values. But the first argument to the plot command is a single
-value. So to plot this data we need to create as many points as there
-are in Pressure or Volume data for Temperature too, all having the
-same value. This can be accomplished using::
-
- T = linspace(200, 200, 500)
-
-We now have 500 values in T each with the value 200 Kelvin. Plotting
-this data we get the required plot::
-
- plot(T, 2.0/V)
-
-It is left as a homework to label both X and Y axes for each of the
-two subplots.
-
-{{{ Show summary slide }}}
-
-.. #[Nishanth]: Exercises are missing in the script
- one exercise for overlaid plot and legend
- one for figure command
- one for subplot must do
-
-This brings us to the end of another session. In this tutorial session
-we learnt
-
- * How to draw multiple plots which are overlaid
- * the figure command
- * the legend command
- * how to switch between the plots and perform some operations on each
- of them like saving the plots and
- * creating and switching between subplots
-
-.. #[Nishanth]: legend command can be told right after overlaid plots
-.. #[Madhu: Incorporated]
-
-{{{ Show the "sponsored by FOSSEE" slide }}}
-
-This tutorial was created as a part of FOSSEE project, NME ICT, MHRD India
-
-Hope you have enjoyed and found it useful.
-Thankyou
-
-.. Author : Madhu
- Internal Reviewer 1 : [potential reviewer: Puneeth]
- Internal Reviewer 2 : Nishanth
- External Reviewer :
-
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/multiple-plots/questions.rst Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,89 @@
+Objective Questions
+-------------------
+
+.. A mininum of 8 questions here (along with answers)
+
+1. Multiple plots appear in different figures by default. True or False?
+
+ Answer: False
+
+#. What command is used to get individual plots separately?
+
+ Answer: Figure
+
+#. Which figure is closed after the following commands are run?
+
+::
+
+ x = linspace(0, 50, 500)
+ figure(1)
+ plot(x, sin(x), 'b')
+ figure(2)
+ plot(x, cos(x), 'g')
+ xlabel('x')
+ ylabel('cos(x)')
+ close()
+
+ Answer: Figure 2
+
+#. Describe the plot obtained by the following commands::
+
+ x = linspace(0, 50, 500)
+ subplot(2, 1, 1)
+ plot(x, sin(x), 'b')
+
+Answer: A figure window with space for 2 plots one below the other is
+ obtained. The sine plot with blue line appears in the first row.
+
+#. Describe the plot obtained by the following commands::
+
+ x = linspace(0, 50, 500)
+ subplot(2, 1, 1)
+ plot(x, sin(x), 'b')
+ subplot(2, 1, 2)
+ plot(x, cos(x), 'g')
+
+ Answer: 2 plots one below another. sine in blue on first row. cosine
+ in green in the second row.
+
+#. Describe the plot obtained by the following commands::
+
+ x = linspace(0, 50, 500)
+ subplot(2, 1, 1)
+ plot(x, sin(x), 'b')
+ subplot(2, 1, 2)
+ plot(x, cos(x), 'g')
+ subplot(2, 1, 1)
+ plot(x, tan(x), 'r')
+
+ Answer: 2 plots one below another. tan in red on first row. cosine
+ in green in the second row.
+
+
+#. Which of the following gives the correct legend for the commands below
+
+ a. legend([sin, cos, tan])
+ #. legend([tan, cos, sin])
+ #. legend[(tan, cos, sin)]
+ #. legend(['sin', 'cos', 'tan'])
+ #. legend(['tan', 'cos', 'sin'])
+
+::
+
+ x = linspace(0, 50, 500)
+ figure(1)
+ plot(x, sin(x), 'b')
+ figure(2)
+ plot(x, cos(x), 'g')
+ figure(3)
+ plot(x, tan(x), 'b')
+
+ Answer: legend(['tan', 'cos', 'sin'])
+
+Larger Questions
+----------------
+
+.. A minimum of 2 questions here (along with answers)
+
+1. Question 1
+2. Question 2
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/multiple-plots/script.rst Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,383 @@
+.. Objectives
+.. ----------
+
+.. * How to draw multiple plots which are overlaid
+.. * the figure command
+.. * the legend command
+.. * how to switch between the plots and perform some operations on each
+.. of them like saving the plots and
+.. * creating and switching between subplots
+
+
+.. Prerequisites
+.. -------------
+
+.. 1. using the plot command interactively
+.. 2. embellishing a plot
+.. 3. saving plots
+
+.. Author : Madhu
+ Internal Reviewer 1 : [potential reviewer: Puneeth]
+ Internal Reviewer 2 : Nishanth
+ External Reviewer :
+
+Script
+------
+
+{{{ Show the slide containing the title }}}
+
+Hello friends. Welcome to this spoken tutorial on Multiple plots.
+
+{{{ Show the slide containing the outline }}}
+
+In this tutorial, we will learn how to draw more than one plot, how to
+add legends to each plot to indicate what each plot represents. We
+will also learn how to switch between the plots and create multiple
+plots with different regular axes which are also called as subplots.
+
+.. #[Nishanth]: See diff - edited a grammatical mistake
+.. #[Madhu: Done]
+
+{{{ Shift to terminal and start ipython -pylab }}}
+
+To begin with let us start ipython with pylab, by typing::
+
+ ipython -pylab
+
+on the terminal
+
+Let us first create set of points for our plot. For this we will use
+the command called linspace::
+
+ x = linspace(0, 50, 10)
+
+linspace command creates 10 points in the interval between 0 and 50
+both inclusive. We assign these values to a variable called x.
+
+.. #[Nishanth]: pre requisite for this LO is basic plotting which
+ covers linspace and plot. So you may not need to
+ specify all that again. But not a problem if it is
+ there also.
+.. #[Madhu: Since I thought the LOs are disconnected, I thought it is
+ better to give a very short intro to it]
+
+Now let us draw a plot simple sine plot using these points::
+
+ plot(x, sin(x))
+
+This should give us a nice sine plot.
+
+{{{ Switch to the plot window }}}
+
+Oh! wait! Is that a nice sine plot? Does a sine plot actually look
+like that? We know that a sine plot is a smooth curve. Is it not? What
+really caused this?
+
+.. #[Nishanth]: See diff
+.. #[Madhu: Done]
+
+{{{ pause for a while }}}
+
+A small investigation on linspace tells us that we chose too few
+points in a large interval between 0 and 50 for the curve to be
+smooth. This should also indicate that the plot command actually plots
+the set of points given by x and sin(x) and it doesn't plot the
+analytical function itself i.e. it plots the points given by
+Analytical functions. So now let us use linspace again to get 500
+points between 0 and 100 and draw the sine plot
+
+.. #[Nishanth]: Here specify that when we do plot(x, sin(x)
+ it is actually plotting two sets of points
+ and not analytical functions. Hence the sharp
+ curve.
+.. #[Madhu: Incorporated]
+
+{{{ Switch to ipython andtype }}} ::
+
+ y = linspace(0, 50, 500)
+ plot(y, sin(y))
+
+{{{ Change to the plot window }}}
+
+Now we see what we remember as a sine plot. A smooth curve. If we
+carefully notice we also have two plots now one overlaid upon
+another. In pylab, by default all the plots are overlaid.
+
+Since we have two plots now overlaid upon each other we would like to
+have a way to indicate what each plot represents to distinguish
+between them. This is accomplished using legends. Equivalently, the
+legend command does this for us
+
+{{{ Switch to ipython }}}::
+
+ legend(['sin(x)', 'cos(x)'])
+
+.. #[Nishanth]: This legend may go up in the script. May be before
+ introducing the figure command itself.
+.. #[Madhu: brought up]
+
+The legend command takes a single list of parameters where each
+parameter is the text indicating the plots in the order of their
+serial number.
+
+{{{ Switch to plot window }}}
+
+Now we can see the legends being displayed for the respective sine and
+cosine plots on the plot area.
+
+We have learnt quite a lot of things now, so let us take up an
+exercise problem.
+
+%% 1 %% Draw two plots overlaid upon each other, with the first plot
+ being a parabola of the form y = 4(x ^ 2) and the second being a
+ straight line of the form y = 2x + 3 in the interval -5 to 5. Use
+ colors to differentiate between the plots and use legends to
+ indicate what each plot is doing.
+
+{{{ pause for a while and continue from paused state }}}
+
+We can obtain the two plots in different colors using the following
+commands::
+
+ x = linspace(-5, 5, 100)
+ plot(x, 4 * (x * x), 'b')
+ plot(x, (2 * x) + 3, 'g')
+
+Now we can use the legend command as::
+
+ legend(['Parabola', 'Straight Line'])
+
+Or we can also just give the equations of the plot::
+
+ legend(['y = 4(x ^ 2)', 'y = 2x + 3'])
+
+We now know how to draw multiple plots and use legends to indicate
+which plot represents what function, but we would like to have more
+control over the plots we draw. Like switch between them, perform some
+operations or labelling on them individually and so on. Let us see how
+to accomplish this. Before we move on, let us clear our screen.
+
+{{{ Switch to ipython }}}::
+
+ clf()
+
+To accomplishing more control over individual plots we use the figure
+command::
+
+ x = linspace(0, 50, 500)
+ figure(1)
+ plot(x, sin(x), 'b')
+ figure(2)
+ plot(x, cos(x), 'g')
+
+{{{ Switch to plot window }}}
+
+Now we have two plots, a sine plot and a cosine plot in two different
+figures.
+
+.. #[Nishanth]: figure(1) and figure(2) give two different plots.
+ The remaining script moves on the fact that they
+ give overlaid plots which is not the case.
+ So clear the figure and plot cos and sin without
+ introducing figure command. Then introduce legend
+ and finish off the everything on legend.
+ Then introduce figure command.
+
+.. #[Madhu: I have just moved up the text about legend command. I
+ think that should take care of what you suggested. If there is
+ some mistake with it, Punch please let me know in your next
+ review.]
+
+{{{ Have both plot window and ipython side by side }}}
+
+The figure command takes an integer as an argument which is the serial
+number of the plot. This selects the corresponding plot. All the plot
+commands we run after this are applied to the selected plot. In this
+example figure 1 is the sine plot and figure 2 is the cosine plot. We
+can, for example, save each plot separately
+
+{{{ Switch to ipython }}}::
+
+ savefig('/home/user/cosine.png')
+ figure(1)
+ title('sin(y)')
+ savefig('/home/user/sine.png')
+
+{{{ Have both plot window and ipython side by side }}}
+
+We also titled the our first plot as 'sin(y)' which we did not do for
+the second plot.
+
+Let us attempt another exercise problem
+
+%% 2 %% Draw a line of the form y = x as one figure and another line
+ of the form y = 2x + 3. Switch back to the first figure, annotate
+ the x and y intercepts. Now switch to the second figure and
+ annotate its x and y intercepts. Save each of them.
+
+{{{ Pause for a while and continue from the paused state }}}
+
+To solve this problem we should first create the first figure using
+the figure command. Before that, let us first run clf command to make
+sure all the previous plots are cleared::
+
+ clf()
+ figure(1)
+ x = linspace(-5, 5, 100)
+ plot(x, x)
+
+Now we can use figure command to create second plotting area and plot
+the figure::
+
+ figure(2)
+ plot(x, ((2 * x) + 3))
+
+Now to switch between the figures we can use figure command. So let us
+switch to figure 1. We are asked to annotate x and y intercepts of the
+figure 1 but since figure 1 passes through origin we will have to
+annotate the origin. We will annotate the intercepts for the second
+figure and save them as follows::
+
+ figure(1)
+ annotate('Origin', xy=(0.0, 0.0)
+ figure(2)
+ annotate('x-intercept', xy=(0, 3))
+ annotate('y-intercept', xy=(0, -1.5))
+ savefig('/home/fossee/plot2.png')
+ figure(1)
+ savefig('/home/fossee/plot1.png')
+
+At times we run into situations where we want to compare two plots and
+in such cases we want to draw both the plots in the same plotting
+area. The situation is such that the two plots have different regular
+axes which means we cannot draw overlaid plots. In such cases we can
+draw subplots.
+
+We use subplot command to accomplish this
+
+{{{ Switch to ipython }}}::
+
+ subplot(2, 1, 1)
+
+subplot command takes three arguments, the first being the number of
+rows of subplots that must be created,
+
+{{{ Have both plot window and ipython side by side }}}
+
+in this case we have 2 so it spilts the plotting area horizontally for
+two subplots. The second argument specifies the number of coloumns of
+subplots that must be created. We passed 1 as the argument so the
+plotting area won't be split vertically and the last argument
+specifies what subplot must be created now in the order of the serial
+number. In this case we passed 1 as the argument, so the first subplot
+that is top half is created. If we execute the subplot command as
+
+{{{ Switch to ipython }}}::
+
+ subplot(2, 1, 2)
+
+{{{ Switch to plot window }}}
+
+The lower subplot is created. Now we can draw plots in each of the
+subplot area using the plot command.
+
+{{{ Switch to ipython }}}::
+
+ x = linspace(0, 50, 500)
+ plot(x, cos(x))
+ subplot(2, 1, 1)
+ y = linspace(0, 5, 100)
+ plot(y, y ** 2)
+
+{{{ Have both plot window and ipython side by side }}}
+
+This created two plots one in each of the subplot area. The top
+subplot holds a parabola and the bottom subplot holds a cosine
+curve.
+
+As seen here we can use subplot command to switch between the subplot
+as well, but we have to use the same arguments as we used to create
+that subplot, otherwise the previous subplot at that place will be
+automatically erased. It is clear from the two subplots that both have
+different regular axes. For the cosine plot x-axis varies from 0 to
+100 and y-axis varies from 0 to 1 where as for the parabolic plot the
+x-axis varies from 0 to 10 and y-axis varies from 0 to 100
+
+.. #[Nishanth]: stress on the similarity between subplot and figure
+ commands
+
+.. #[Madhu: I think they are not really similar. Trying to bring in
+ the similarity will confuse people I think.]
+
+%% 3 %% We know that the Pressure, Volume and Temperatures are held by
+the equation PV = nRT where nR is a constant. Let us assume nR = .01
+Joules/Kelvin and T = 200K. V can be in the range from 21cc to
+100cc. Draw two different plots as subplots, one being the Pressure
+versus Volume plot and the other being Pressure versus Temparature
+plot.
+
+{{{ Pause for a while and continue }}}
+
+To start with, we have been given the range of Volume using which we
+can define the variable V::
+
+ V = linspace(21, 100, 500)
+
+Now we can create first subplot and draw Pressure versus Volume graph
+using this V. We know that nRT is a constant which is equal to 2.0
+since nR = 0.01 Joules/Kelvin and T = 200 Kelvin::
+
+ subplot(2, 1, 1)
+ plot(V, 2.0/V)
+
+Now we can create the second subplot and draw the Pressure versus
+Temparature plot as follows::
+
+ subplot(2, 1, 2)
+ plot(200, 2.0/V)
+
+Unfortunately we have an error now, telling x and y dimensions don't
+match. This is because our V contains a set of values as returned by
+linspace and hence 2.0/V which is the pressure also contains a set of
+values. But the first argument to the plot command is a single
+value. So to plot this data we need to create as many points as there
+are in Pressure or Volume data for Temperature too, all having the
+same value. This can be accomplished using::
+
+ T = linspace(200, 200, 500)
+
+We now have 500 values in T each with the value 200 Kelvin. Plotting
+this data we get the required plot::
+
+ plot(T, 2.0/V)
+
+It is left as a homework to label both X and Y axes for each of the
+two subplots.
+
+{{{ Show summary slide }}}
+
+.. #[Nishanth]: Exercises are missing in the script
+ one exercise for overlaid plot and legend
+ one for figure command
+ one for subplot must do
+
+This brings us to the end of another session. In this tutorial session
+we learnt
+
+ * How to draw multiple plots which are overlaid
+ * the figure command
+ * the legend command
+ * how to switch between the plots and perform some operations on each
+ of them like saving the plots and
+ * creating and switching between subplots
+
+.. #[Nishanth]: legend command can be told right after overlaid plots
+.. #[Madhu: Incorporated]
+
+{{{ Show the "sponsored by FOSSEE" slide }}}
+
+This tutorial was created as a part of FOSSEE project, NME ICT, MHRD India
+
+Hope you have enjoyed and found it useful.
+Thank you!
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/multiple-plots/slides.org Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,123 @@
+#+LaTeX_CLASS: beamer
+#+LaTeX_CLASS_OPTIONS: [presentation]
+#+BEAMER_FRAME_LEVEL: 1
+
+#+BEAMER_HEADER_EXTRA: \usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent}
+#+COLUMNS: %45ITEM %10BEAMER_env(Env) %10BEAMER_envargs(Env Args) %4BEAMER_col(Col) %8BEAMER_extra(Extra)
+#+PROPERTY: BEAMER_col_ALL 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 :ETC
+
+#+LaTeX_CLASS: beamer
+#+LaTeX_CLASS_OPTIONS: [presentation]
+
+#+LaTeX_HEADER: \usepackage[english]{babel} \usepackage{ae,aecompl}
+#+LaTeX_HEADER: \usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet}
+
+#+LaTeX_HEADER: \usepackage{listings}
+
+#+LaTeX_HEADER:\lstset{language=Python, basicstyle=\ttfamily\bfseries,
+#+LaTeX_HEADER: commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen},
+#+LaTeX_HEADER: showstringspaces=false, keywordstyle=\color{blue}\bfseries}
+
+#+TITLE: Accessing parts of arrays
+#+AUTHOR: FOSSEE
+#+EMAIL:
+#+DATE:
+
+#+DESCRIPTION:
+#+KEYWORDS:
+#+LANGUAGE: en
+#+OPTIONS: H:3 num:nil toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t
+#+OPTIONS: TeX:t LaTeX:nil skip:nil d:nil todo:nil pri:nil tags:not-in-toc
+
+* Outline
+ - Manipulating one and multi dimensional arrays
+ - Access and change individual elements
+ - Access and change rows and columns
+ - Slicing and striding on arrays to access chunks
+ - Read images into arrays and manipulations
+* Sample Arrays
+ #+begin_src python
+ In []: A = array([12, 23, 34, 45, 56])
+
+ In []: C = array([[11, 12, 13, 14, 15],
+ [21, 22, 23, 24, 25],
+ [31, 32, 33, 34, 35],
+ [41, 42, 43, 44, 45],
+ [51, 52, 53, 54, 55]])
+
+ #+end_src
+* Question 1
+ Change the last column of ~C~ to zeroes.
+* Solution 1
+ #+begin_src python
+ In []: C[:, -1] = 0
+ #+end_src
+* Question 2
+ Change ~A~ to ~[11, 12, 13, 14, 15]~.
+* Solution 2
+ #+begin_src python
+ In []: A[:] = [11, 12, 13, 14, 15]
+ #+end_src
+* squares.png
+ #+begin_latex
+ \begin{center}
+ \includegraphics[scale=0.6]{squares}
+ \end{center}
+ #+end_latex
+* Question 3
+ - obtain ~[22, 23]~ from ~C~.
+ - obtain ~[11, 21, 31, 41]~ from ~C~.
+ - obtain ~[21, 31, 41, 0]~.
+* Solution 3
+ #+begin_src python
+ In []: C[1, 1:3]
+ In []: C[0:4, 0]
+ In []: C[1:5, 0]
+ #+end_src
+* Question 4
+ Obtain ~[[23, 24], [33, -34]]~ from ~C~
+* Solution 4
+ #+begin_src python
+ In []: C[1:3, 2:4]
+ #+end_src
+* Question 5
+ Obtain the square in the center of the image
+* Solution 5
+ #+begin_src python
+ In []: imshow(I[75:225, 75:225])
+ #+end_src
+* Question 6
+ Obtain the following
+ #+begin_src python
+ [[12, 0], [42, 0]]
+ [[12, 13, 14], [0, 0, 0]]
+ #+end_src
+
+* Solution 6
+ #+begin_src python
+ In []: C[::3, 1::3]
+ In []: C[::4, 1:4]
+ #+end_src
+* Summary
+ You should now be able to --
+ - Manipulate 1D \& Multi dimensional arrays
+ - Access and change individual elements
+ - Access and change rows and columns
+ - Slice and stride on arrays
+ - Read images into arrays and manipulate them.
+* Thank you!
+#+begin_latex
+ \begin{block}{}
+ \begin{center}
+ This spoken tutorial has been produced by the
+ \textcolor{blue}{FOSSEE} team, which is funded by the
+ \end{center}
+ \begin{center}
+ \textcolor{blue}{National Mission on Education through \\
+ Information \& Communication Technology \\
+ MHRD, Govt. of India}.
+ \end{center}
+ \end{block}
+#+end_latex
+
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/multiple-plots/slides.tex Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,106 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%Tutorial slides on Python.
+%
+% Author: FOSSEE
+% Copyright (c) 2009, FOSSEE, IIT Bombay
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\documentclass[14pt,compress]{beamer}
+%\documentclass[draft]{beamer}
+%\documentclass[compress,handout]{beamer}
+%\usepackage{pgfpages}
+%\pgfpagesuselayout{2 on 1}[a4paper,border shrink=5mm]
+
+% Modified from: generic-ornate-15min-45min.de.tex
+\mode<presentation>
+{
+ \usetheme{Warsaw}
+ \useoutertheme{infolines}
+ \setbeamercovered{transparent}
+}
+
+\usepackage[english]{babel}
+\usepackage[latin1]{inputenc}
+%\usepackage{times}
+\usepackage[T1]{fontenc}
+
+\usepackage{ae,aecompl}
+\usepackage{mathpazo,courier,euler}
+\usepackage[scaled=.95]{helvet}
+
+\definecolor{darkgreen}{rgb}{0,0.5,0}
+
+\usepackage{listings}
+\lstset{language=Python,
+ basicstyle=\ttfamily\bfseries,
+ commentstyle=\color{red}\itshape,
+ stringstyle=\color{darkgreen},
+ showstringspaces=false,
+ keywordstyle=\color{blue}\bfseries}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% Macros
+\setbeamercolor{emphbar}{bg=blue!20, fg=black}
+\newcommand{\emphbar}[1]
+{\begin{beamercolorbox}[rounded=true]{emphbar}
+ {#1}
+ \end{beamercolorbox}
+}
+\newcounter{time}
+\setcounter{time}{0}
+\newcommand{\inctime}[1]{\addtocounter{time}{#1}{\tiny \thetime\ m}}
+
+\newcommand{\typ}[1]{\lstinline{#1}}
+
+\newcommand{\kwrd}[1]{ \texttt{\textbf{\color{blue}{#1}}} }
+
+% Title page
+\title{Your Title Here}
+
+\author[FOSSEE] {FOSSEE}
+
+\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay}
+\date{}
+
+% DOCUMENT STARTS
+\begin{document}
+
+\begin{frame}
+ \maketitle
+\end{frame}
+
+\begin{frame}[fragile]
+ \frametitle{Outline}
+ \begin{itemize}
+ \item
+ \end{itemize}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% All other slides here. %%
+%% The same slides will be used in a classroom setting. %%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\begin{frame}[fragile]
+ \frametitle{Summary}
+ \begin{itemize}
+ \item
+ \end{itemize}
+\end{frame}
+
+\begin{frame}
+ \frametitle{Thank you!}
+ \begin{block}{}
+ \begin{center}
+ This spoken tutorial has been produced by the
+ \textcolor{blue}{FOSSEE} team, which is funded by the
+ \end{center}
+ \begin{center}
+ \textcolor{blue}{National Mission on Education through \\
+ Information \& Communication Technology \\
+ MHRD, Govt. of India}.
+ \end{center}
+ \end{block}
+\end{frame}
+
+\end{document}
--- a/using-sage/script.rst Tue Oct 12 17:15:11 2010 +0530
+++ b/using-sage/script.rst Wed Oct 13 11:15:37 2010 +0530
@@ -1,10 +1,29 @@
-========
- Script
-========
+.. Objectives
+.. ----------
+
+.. By the end of this tutorial you will --
+
+.. 1. Get an idea of the range of things for which Sage can be used.
+.. #. Know some of the functions for Calculus
+.. #. Get some insight into Graphs in Sage.
+
+
+.. Prerequisites
+.. -------------
+
+.. Getting Started -- Sage
+
+.. Author : Puneeth
+ Internal Reviewer :
+ External Reviewer :
+ Checklist OK? : <put date stamp here, if OK> [2010-10-05]
+
+Script
+------
{{{ show the welcome slide }}}
-Welcome to this tutorial on using Sage.
+Hello Friends. Welcome to this tutorial on using Sage.
{{{ show the slide with outline }}}
@@ -194,4 +213,8 @@
We have looked at some of the functions available for Linear Algebra,
Calculus, Graph Theory and Number theory.
-Thank You!
+This tutorial was created as a part of FOSSEE project, NME ICT, MHRD India
+
+Hope you have enjoyed and found it useful.
+Thank you!
+
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/using-sage/slides.org Wed Oct 13 11:15:37 2010 +0530
@@ -0,0 +1,60 @@
+#+LaTeX_CLASS: beamer
+#+LaTeX_CLASS_OPTIONS: [presentation]
+#+BEAMER_FRAME_LEVEL: 1
+
+#+BEAMER_HEADER_EXTRA: \usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent}
+#+COLUMNS: %45ITEM %10BEAMER_env(Env) %10BEAMER_envargs(Env Args) %4BEAMER_col(Col) %8BEAMER_extra(Extra)
+#+PROPERTY: BEAMER_col_ALL 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 :ETC
+
+#+LaTeX_CLASS: beamer
+#+LaTeX_CLASS_OPTIONS: [presentation]
+
+#+LaTeX_HEADER: \usepackage[english]{babel} \usepackage{ae,aecompl}
+#+LaTeX_HEADER: \usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet}
+
+#+LaTeX_HEADER: \usepackage{listings}
+
+#+LaTeX_HEADER:\lstset{language=Python, basicstyle=\ttfamily\bfseries,
+#+LaTeX_HEADER: commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen},
+#+LaTeX_HEADER: showstringspaces=false, keywordstyle=\color{blue}\bfseries}
+
+#+TITLE: using Sage
+#+AUTHOR: FOSSEE
+#+EMAIL:
+#+DATE:
+
+#+DESCRIPTION:
+#+KEYWORDS:
+#+LANGUAGE: en
+#+OPTIONS: H:3 num:nil toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t
+#+OPTIONS: TeX:t LaTeX:nil skip:nil d:nil todo:nil pri:nil tags:not-in-toc
+
+* Outline
+ - Calculus
+ - Linear Algebra
+ - Graph Theory
+ - Number Theory
+* Summary
+ - Differentiating and Integrating
+ - Taylor Expansions
+ - Solving Equations
+ - Initializing Graphs & Graph families
+ - Prime numbers
+ - Factors
+ - Combinations & Permutations
+* Thank you!
+#+begin_latex
+ \begin{block}{}
+ \begin{center}
+ This spoken tutorial has been produced by the
+ \textcolor{blue}{FOSSEE} team, which is funded by the
+ \end{center}
+ \begin{center}
+ \textcolor{blue}{National Mission on Education through \\
+ Information \& Communication Technology \\
+ MHRD, Govt. of India}.
+ \end{center}
+ \end{block}
+#+end_latex
+
+
--- a/using-sage/slides.tex Tue Oct 12 17:15:11 2010 +0530
+++ b/using-sage/slides.tex Wed Oct 13 11:15:37 2010 +0530
@@ -1,95 +1,74 @@
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%Tutorial slides on Python.
-%
-% Author: FOSSEE
-% Copyright (c) 2009, FOSSEE, IIT Bombay
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-\documentclass[14pt,compress]{beamer}
-%\documentclass[draft]{beamer}
-%\documentclass[compress,handout]{beamer}
-%\usepackage{pgfpages}
-%\pgfpagesuselayout{2 on 1}[a4paper,border shrink=5mm]
-
-% Modified from: generic-ornate-15min-45min.de.tex
-\mode<presentation>
-{
- \usetheme{Warsaw}
- \useoutertheme{infolines}
- \setbeamercovered{transparent}
-}
-
-\usepackage[english]{babel}
+% Created 2010-10-11 Mon 22:48
+\documentclass[presentation]{beamer}
\usepackage[latin1]{inputenc}
-%\usepackage{times}
\usepackage[T1]{fontenc}
-
-\usepackage{ae,aecompl}
-\usepackage{mathpazo,courier,euler}
-\usepackage[scaled=.95]{helvet}
+\usepackage{fixltx2e}
+\usepackage{graphicx}
+\usepackage{longtable}
+\usepackage{float}
+\usepackage{wrapfig}
+\usepackage{soul}
+\usepackage{textcomp}
+\usepackage{marvosym}
+\usepackage{wasysym}
+\usepackage{latexsym}
+\usepackage{amssymb}
+\usepackage{hyperref}
+\tolerance=1000
+\usepackage[english]{babel} \usepackage{ae,aecompl}
+\usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet}
+\usepackage{listings}
+\lstset{language=Python, basicstyle=\ttfamily\bfseries,
+commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen},
+showstringspaces=false, keywordstyle=\color{blue}\bfseries}
+\providecommand{\alert}[1]{\textbf{#1}}
-\definecolor{darkgreen}{rgb}{0,0.5,0}
-
-\usepackage{listings}
-\lstset{language=Python,
- basicstyle=\ttfamily\bfseries,
- commentstyle=\color{red}\itshape,
- stringstyle=\color{darkgreen},
- showstringspaces=false,
- keywordstyle=\color{blue}\bfseries}
-
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% Macros
-\setbeamercolor{emphbar}{bg=blue!20, fg=black}
-\newcommand{\emphbar}[1]
-{\begin{beamercolorbox}[rounded=true]{emphbar}
- {#1}
- \end{beamercolorbox}
-}
-\newcounter{time}
-\setcounter{time}{0}
-\newcommand{\inctime}[1]{\addtocounter{time}{#1}{\tiny \thetime\ m}}
-
-\newcommand{\typ}[1]{\lstinline{#1}}
-
-\newcommand{\kwrd}[1]{ \texttt{\textbf{\color{blue}{#1}}} }
-
-% Title page
-\title{Your Title Here}
-
-\author[FOSSEE] {FOSSEE}
-
-\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay}
+\title{using Sage}
+\author{FOSSEE}
\date{}
-% DOCUMENT STARTS
+\usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent}
\begin{document}
+\maketitle
+
+
+
+
+
+
+
+
+
\begin{frame}
- \maketitle
-\end{frame}
+\frametitle{Outline}
+\label{sec-1}
-\begin{frame}[fragile]
- \frametitle{Outline}
- \begin{itemize}
- \item
- \end{itemize}
+\begin{itemize}
+\item Calculus
+\item Linear Algebra
+\item Graph Theory
+\item Number Theory
+\end{itemize}
\end{frame}
+\begin{frame}
+\frametitle{Summary}
+\label{sec-2}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%% All other slides here. %%
-%% The same slides will be used in a classroom setting. %%
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\begin{itemize}
+\item Differentiating and Integrating
+\item Taylor Expansions
+\item Solving Equations
+\item Initializing Graphs \& Graph families
+\item Prime numbers
+\item Factors
+\item Combinations \& Permutations
+\end{itemize}
+\end{frame}
+\begin{frame}
+\frametitle{Thank you!}
+\label{sec-3}
-\begin{frame}[fragile]
- \frametitle{Summary}
- \begin{itemize}
- \item
- \end{itemize}
-\end{frame}
-
-\begin{frame}
- \frametitle{Thank you!}
\begin{block}{}
\begin{center}
This spoken tutorial has been produced by the