--- a/getting-started-sagenotebook.rst	Wed Oct 13 11:13:01 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 11:13:46 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 11:13:46 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 11:13:46 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 11:13:46 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 11:13:46 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}