--- a/additional_ipython/script.rst Thu Oct 14 14:11:54 2010 +0530
+++ b/additional_ipython/script.rst Mon Oct 18 21:11:34 2010 +0530
@@ -1,11 +1,6 @@
.. Objectives
.. ----------
-.. A - Students and teachers from Science and engineering backgrounds
- B -
- C -
- D -
-
.. By the end of this tutorial you will be able to
.. #. Retrieve your ipython history
--- a/embellishing_a_plot/quickref.tex Thu Oct 14 14:11:54 2010 +0530
+++ b/embellishing_a_plot/quickref.tex Mon Oct 18 21:11:34 2010 +0530
@@ -1,11 +1,34 @@
-Creating a tuple:\\
-{\ex \lstinline| t = (1, "hello", 2.5)|}
+Plot with a specific color. Ex: RED :\\
+{\ex \lstinline| plot(x, f(x), "r")|}
+
+Plot with a specific style. Ex: DASHED :\\
+{\ex \lstinline| plot(x, f(x), "--")|}
-Accessing elements of tuples:\\
-{\ex \lstinline| t[index] Ex: t[2]|}
+Plot with specific color and style. Ex: RED DASHED :\\
+{\ex \lstinline| plot(x, f(x), "r--")|}
+
+Plot with a specific line thickness:\\
+{\ex \lstinline| plot(x, f(x), linewidth=3)|}
+
+Adding title:\\
+{\ex \lstinline| title("Plot of sin(x)")|}
-Accessing slices of tuples:\\
-{\ex \lstinline| t[start:stop:step]|}
+labelling the axes:\\
+{\ex \lstinline| xlabel("x")|}
+{\ex \lstinline| ylabel("f(x)")|}
+
+Adding annotations:\\
+{\ex \lstinline| annotate("localmax", xy=(1, 2))|}
+
+Using LaTeX typesetting on any text:\\
+{\ex \lstinline| title("Plot of $sin(x)$")|}
-Swapping values:\\
-{\ex \lstinline| a, b = b, a|}
+Getting the axes limits:\\
+{\ex \lstinline| xlim()|}
+{\ex \lstinline| ylim()|}
+
+Setting the axes limits:\\
+{\ex \lstinline| xlim(x_min, x_max)|}
+{\ex \lstinline| ylim(y_min, y_max)|}
+
+
--- a/embellishing_a_plot/script.rst Thu Oct 14 14:11:54 2010 +0530
+++ b/embellishing_a_plot/script.rst Mon Oct 18 21:11:34 2010 +0530
@@ -1,11 +1,6 @@
.. Objectives
.. ----------
-.. A - Students and teachers from Science and engineering backgrounds
- B -
- C -
- D -
-
.. By the end of this tutorial you will be able to
.. * Modify the attributes of the plot -- color, line style, linewidth
--- a/input_output/quickref.tex Thu Oct 14 14:11:54 2010 +0530
+++ b/input_output/quickref.tex Mon Oct 18 21:11:34 2010 +0530
@@ -1,11 +1,15 @@
-Creating a tuple:\\
-{\ex \lstinline| t = (1, "hello", 2.5)|}
+Printing a variable:\\
+{\ex \lstinline| print x|}
-Accessing elements of tuples:\\
-{\ex \lstinline| t[index] Ex: t[2]|}
+Printing with out a new line:\\
+{\ex \lstinline| print x, |}
-Accessing slices of tuples:\\
-{\ex \lstinline| t[start:stop:step]|}
+Using modifiers while printing:\\
+{\ex \lstinline| print "a is \%d b is \%f"\%(a, b)|}
-Swapping values:\\
-{\ex \lstinline| a, b = b, a|}
+Taking input from user:\\
+{\ex \lstinline| x = raw_input()|}
+
+Display a prompt while taking input:\\
+{\ex \lstinline| x = raw_input("Type a number: ")|}
+
--- a/input_output/script.rst Thu Oct 14 14:11:54 2010 +0530
+++ b/input_output/script.rst Mon Oct 18 21:11:34 2010 +0530
@@ -1,17 +1,11 @@
.. Objectives
.. ----------
-.. A - Students and teachers from Science and engineering backgrounds
- B -
- C -
- D -
-
.. #. How to print some value
.. #. How to print using modifiers
.. #. How to take input from user
.. #. How to display a prompt to the user before taking the input
-
.. Prerequisites
.. -------------
--- a/lstsq/questions.rst Thu Oct 14 14:11:54 2010 +0530
+++ b/lstsq/questions.rst Mon Oct 18 21:11:34 2010 +0530
@@ -8,6 +8,8 @@
#. [1.0, 1.0, 1.0]
#. Error
+ Answer: array([1, 1, 1])
+
2. What does ones_like([1.2, 3, 4, 5]) produce
a. [1.2, 3, 4, 5]
@@ -15,4 +17,16 @@
#. array([1, 1, 1, 1])
#. array([1.2, 3, 4, 5])
+ Answer: array([1.0, 1.0, 1.0, 1.0])
+ 3. The plot of ``u`` vs ``v`` is a bunch of scattered points that show a
+ linear trend. How do you find the least square fit line of ``u`` vs ``v``.
+
+ Answer::
+
+ A = array(u, ones_like(u)).T
+ result = lstsq(A, v)
+ m, c = result[0]
+
+ lst_line = m * u + c
+
--- a/lstsq/quickref.tex Thu Oct 14 14:11:54 2010 +0530
+++ b/lstsq/quickref.tex Mon Oct 18 21:11:34 2010 +0530
@@ -1,11 +1,15 @@
-Creating a tuple:\\
-{\ex \lstinline| t = (1, "hello", 2.5)|}
+Creating a matrix with all ones:\\
+{\ex \lstinline| o = ones_like(l)|}
-Accessing elements of tuples:\\
-{\ex \lstinline| t[index] Ex: t[2]|}
+Creating the A matrix:\\
+{\ex \lstinline| A = array(l, ones_like(l)).T|}
-Accessing slices of tuples:\\
-{\ex \lstinline| t[start:stop:step]|}
+Computing least square:\\
+{\ex \lstinline| result = lstsq(A, tsq)|}
-Swapping values:\\
-{\ex \lstinline| a, b = b, a|}
+Obtaining the m and c values:\\
+{\ex \lstinline| m, c = result[0]|}
+
+Computing the least square fit line:\\
+{\ex \lstinline| lst_line = m * l + c|}
+
--- a/lstsq/script.rst Thu Oct 14 14:11:54 2010 +0530
+++ b/lstsq/script.rst Mon Oct 18 21:11:34 2010 +0530
@@ -1,11 +1,6 @@
.. Objectives
.. ----------
-.. A - Students and teachers from Science and engineering backgrounds
- B -
- C -
- D -
-
.. Plotting a least square fit line
.. Prerequisites
@@ -13,6 +8,7 @@
.. 1. Basic Plotting
.. 2. Arrays
+.. 3. Loading data from files
.. Author : Nishanth Amuluru
Internal Reviewer :
--- a/parsing_data/quickref.tex Thu Oct 14 14:11:54 2010 +0530
+++ b/parsing_data/quickref.tex Mon Oct 18 21:11:34 2010 +0530
@@ -1,11 +1,15 @@
-Creating a tuple:\\
-{\ex \lstinline| t = (1, "hello", 2.5)|}
+Splitting a string on whitespace:\\
+{\ex \lstinline| str_var.split()|}
-Accessing elements of tuples:\\
-{\ex \lstinline| t[index] Ex: t[2]|}
+Splitting a string using a delimiter. Ex: ";" :\\
+{\ex \lstinline| str_var.split(";")|}
-Accessing slices of tuples:\\
-{\ex \lstinline| t[start:stop:step]|}
+Stripping the whitespace around a string:\\
+{\ex \lstinline| str_var.strip()|}
-Swapping values:\\
-{\ex \lstinline| a, b = b, a|}
+Converting a string or float to int:\\
+{\ex \lstinline| int(var_name)|}
+
+Converting a string or int into float:\\
+{\ex \lstinline| float(var_name)|}
+
--- a/parsing_data/script.rst Thu Oct 14 14:11:54 2010 +0530
+++ b/parsing_data/script.rst Mon Oct 18 21:11:34 2010 +0530
@@ -1,10 +1,11 @@
.. Objectives
.. ----------
-.. A - Students and teachers from Science and engineering backgrounds
- B -
- C -
- D -
+.. By the end of this tutorial you will be able to
+
+.. * Split a string using a delimiter
+.. * remove the whitespace around the string
+.. * convert the variables from one type to other
.. Prerequisites
.. -------------
--- a/plotting_using_sage/quickref.tex Thu Oct 14 14:11:54 2010 +0530
+++ b/plotting_using_sage/quickref.tex Mon Oct 18 21:11:34 2010 +0530
@@ -1,11 +1,30 @@
-Creating a tuple:\\
-{\ex \lstinline| t = (1, "hello", 2.5)|}
+Plot simple 2D functions on a linear range of x:\\
+{\ex \lstinline| plot(f(x), (x, 0, 2*pi)|}
+
+Plot 2D plots where x and y are functions of another variable:\\
+{\ex \lstinline| parametric_plot((f_x, f_y), (x, 0, 2*pi), (y, 0, 2*pi))|}
-Accessing elements of tuples:\\
-{\ex \lstinline| t[index] Ex: t[2]|}
+Generate a sequence of points with a given seperation:\\
+{\ex \lstinline| points = srange(2.5, 5.5, 0.25)|}
+
+Plot a line joining a list of pairs of points:\\
+{\ex \lstinline| line(list_pairs)|}
+
+Show the plots:\\
+{\ex \lstinline| show(plot_name)|}
-Accessing slices of tuples:\\
-{\ex \lstinline| t[start:stop:step]|}
+Show multiple plots:\\
+{\ex \lstinline| show(p1+p2+p3)|}
+
+Set x-axis limits:\\
+{\ex \lstinline| show(p1+p2, xmim=0, xmax=2*pi)|}
-Swapping values:\\
-{\ex \lstinline| a, b = b, a|}
+Set y-axis limits:\\
+{\ex \lstinline| show(p1+p2, ymim=-1.2, ymax=1.2)|}
+
+Plot 3D functions:\\
+{\ex \lstinline| plot3d(f(x, y), (x, 0, 2*pi), (y, -1, 1))|}
+
+Plot 3D functions where x, y, z are functions of another variable:\\
+{\ex \lstinline| parametric_plot3d((f_x, f_y, f_z), (t, 0, 10))|}
+
--- a/plotting_using_sage/script.rst Thu Oct 14 14:11:54 2010 +0530
+++ b/plotting_using_sage/script.rst Mon Oct 18 21:11:34 2010 +0530
@@ -1,10 +1,10 @@
.. Objectives
.. ----------
-.. A - Students and teachers from Science and engineering backgrounds
- B -
- C -
- D -
+.. By the end of this tutorial you will be able to
+
+.. * Use SAGE for 2D plotting
+.. * Use SAGE for 3D plotting
.. Prerequisites
.. -------------
--- a/sets/quickref.tex Thu Oct 14 14:11:54 2010 +0530
+++ b/sets/quickref.tex Mon Oct 18 21:11:34 2010 +0530
@@ -1,11 +1,23 @@
-Creating a tuple:\\
-{\ex \lstinline| t = (1, "hello", 2.5)|}
+Creating a set:\\
+{\ex \lstinline| p10 = set([2, 3, 5, 7]) |t}
-Accessing elements of tuples:\\
-{\ex \lstinline| t[index] Ex: t[2]|}
+Creating set from a tuple or list:\\
+{\ex \lstinline| s = set(var_name)|}
+
+Operations on sets. Ex: UNION:\\
+{\ex \lstinline| s1 \| s2 |}
+
+Other operations available:\\
-Accessing slices of tuples:\\
-{\ex \lstinline| t[start:stop:step]|}
+\begin{lstlising}
+\item "\&" -- Intersection
+\item "-" -- Difference
+\item "\^" -- Symmetric Difference
+\item "<" -- Subset
+\end{lstlisting}
-Swapping values:\\
-{\ex \lstinline| a, b = b, a|}
+Checking for containership:\\
+{\ex \lstinline| x in p10|}
+
+Finding the no.of elements:\\
+{\ex \lstinline| len(p10)|}
--- a/sets/script.rst Thu Oct 14 14:11:54 2010 +0530
+++ b/sets/script.rst Mon Oct 18 21:11:34 2010 +0530
@@ -1,11 +1,13 @@
.. Objectives
.. ----------
-.. A - Students and teachers from Science and engineering backgrounds
- B - Will learn what are tuples and why they are needed
- Will learn the various methods of accessing elements in tuples
- C -
- D -
+.. By the end of this tutorial, you will be able to
+
+.. * Create sets from lists
+.. * Perform union, intersection and symmetric difference operations
+.. * Check if a set is a subset of other
+.. * understand various similarities with lists like length and containership
+
.. Prerequisites
.. -------------
--- a/using_sage_to_teach/quickref.tex Thu Oct 14 14:11:54 2010 +0530
+++ b/using_sage_to_teach/quickref.tex Mon Oct 18 21:11:34 2010 +0530
@@ -1,11 +1,26 @@
-Creating a tuple:\\
-{\ex \lstinline| t = (1, "hello", 2.5)|}
+using @interact:\\
+{\ex \lstinline| @interact
+ def f(a=5,b=[1,2],c=(0..3))|}
-Accessing elements of tuples:\\
-{\ex \lstinline| t[index] Ex: t[2]|}
+Default argument for a field input:\\
+{\ex \lstinline| def f(a="hello")|}
+
+Default argument for slider:\\
+{\ex \lstinline| def f(a=(1..8))|}
+
+Default argument for buttons:\\
+{\ex \lstinline| def f(a=[1, 2, 3])|}
-Accessing slices of tuples:\\
-{\ex \lstinline| t[start:stop:step]|}
+Publish worksheets:\\
+{\ex \lstinline| Use Publish option on top right corner|}
+
+Re-Publish worksheets:\\
+{\ex \lstinline| Check the auto re-publish option while publishing or click
+on publish and click on the re-publish option on the page.|}
-Swapping values:\\
-{\ex \lstinline| a, b = b, a|}
+Share the worksheets:\\
+{\ex \lstinline| Click on the share button and enter the usernames|}
+
+Editing a published worksheet:\\
+{\ex \lstinline| Open the worksheet and click on the edit button on top left
+corner|}
--- a/using_sage_to_teach/script.rst Thu Oct 14 14:11:54 2010 +0530
+++ b/using_sage_to_teach/script.rst Mon Oct 18 21:11:34 2010 +0530
@@ -1,10 +1,10 @@
.. Objectives
.. ----------
-.. A - Students and teachers from Science and engineering backgrounds
- B -
- C -
- D -
+.. By the end of this tutorial you will be able to
+
+.. * use ``@interact`` feature of SAGE
+.. * learn to share, publish and edit SAGE worksheets
.. Prerequisites
.. -------------
--- a/writing_python_scripts/questions.rst Thu Oct 14 14:11:54 2010 +0530
+++ b/writing_python_scripts/questions.rst Mon Oct 18 21:11:34 2010 +0530
@@ -1,90 +1,120 @@
Objective Questions
-------------------
- 1. If ``a = [1, 1, 2, 3, 3, 5, 5, 8]``. What is set(a)
+ 1. Which of the following variables contains the locations to search for
+ python modules
- a. set([1, 1, 2, 3, 3, 5, 5, 8])
- #. set([1, 2, 3, 5, 8])
- #. set([1, 2, 3, 3, 5, 5])
- #. Error
+ a. sys.pythonpath
+ #. sys.path
+ #. os.pythonpath
+ #. os.path
+
+ Answer: sys.path
- Answer: set([1, 2, 3, 5, 8])
-
- 2. ``a = set([1, 3, 5])``. How do you find the length of a?
+ 2. What is the type of ``sys.path``
- Answer: len(a)
+ a. list of strings
+ #. list of int
+ #. string
+ #. tuple of strings
- 3. ``a = set([1, 3, 5])``. What does a[2] produce?
+ Answer: list of strings
+
+ 3. The script ``utils.py`` is in one of locations of PYTHONPATH and contains
+ the following code:
- a. 1
- #. 3
- #. 5
- #. Error
+ def show(x):
+ print x
+
+ show("Hello World")
- Answer: Error
+ if __name__ == "__main__":
- 4. ``odd = set([1, 3, 5, 7, 9])`` and ``squares = set([1, 4, 9, 16])``. What
- is the value of ``odd | squares``?
+ show("Hello Test")
+
+ How do you import the file.
- Answer: set([1, 3, 4, 5, 7, 9, 16])
+ a. import utils
+ #. import utils.py
+ #. import /home/user/utils
+ #. import /home/user/utils.py
- 5. ``odd = set([1, 3, 5, 7, 9])`` and ``squares = set([1, 4, 9, 16])``. What
- is the value of ``odd - squares``?
+ Answer: import utils
- Answer: set([3, 5, 7])
+ 4. The script ``utils.py`` is in one of locations of PYTHONPATH and contains
+ the following code:
- 6. ``odd = set([1, 3, 5, 7, 9])`` and ``squares = set([1, 4, 9, 16])``. What
- is the value of ``odd ^ squares``?
+ def show(x):
+ print x
+
+ show("Hello World")
- Answer: set([3, 4, 5, 7, 16])
+ if __name__ == "__main__":
+
+ show("Hello Test")
- 7. ``odd = set([1, 3, 5, 7, 9])`` and ``squares = set([1, 4, 9, 16])``. What
- does ``odd * squares`` give?
+ How do you use the ``show`` function after doing ``import utils``
+
+ a. utils.show("hey")
+ #. show("hey")
+ #. utils.py.show("hey")
+ #. utils.py.show.py("hey")
- a. set([1, 12, 45, 112, 9])
- #. set([1, 3, 4, 5, 7, 9, 16])
- #. set([])
- #. Error
+ Answer: utils.show("hey")
+
+ 5. The script ``utils.py`` is in one of locations of PYTHONPATH and contains
+ the following code:
- Answer: Error
+ def show(x):
+ print x
- 8. ``a = set([1, 2, 3, 4])`` and ``b = set([5, 6, 7, 8])``. What is ``a + b``
+ show("Hello World")
+
+ if __name__ == "__main__":
- a. set([1, 2, 3, 4, 5, 6, 7, 8])
- #. set([6, 8, 10, 12])
- #. set([5, 12, 21, 32])
- #. Error
+ show("Hello Test")
+
+ How do you use the ``show`` function after doing ``from utils import show``
- 9. ``a`` is a set. how do you check if if a varaible ``b`` exists in ``a``?
+ a. utils.show("hey")
+ #. show("hey")
+ #. utils.py.show("hey")
+ #. utils.py.show.py("hey")
- Answer: b in a
-
- 10. ``a`` and ``b`` are two sets. What is ``a ^ b == (a - b) | (b - a)``?
+ Answer: show("hey")
- a. True
- #. False
+ 5. The script ``utils.py`` is in one of locations of PYTHONPATH and contains
+ the following code:
- Answer: False
-
+ def show(x):
+ print x
-Larger Questions
-----------------
+ show("Hello World")
+
+ if __name__ == "__main__":
- 1. Given that mat_marks is a list of maths marks of a class. Find out the
- no.of duplicates marks in the list.
+ show("Hello Test")
+
+ What is printed when you do ``import utils``
Answer::
+ Hello World
- unique_marks = set(mat_marks)
- no_of_duplicates = len(mat_marks) - len(unique_marks)
+ 6. The script ``utils.py`` is in one of locations of PYTHONPATH and contains
+ the following code:
+
+ def show(x):
+ print x
- 2. Given that mat_marks is a list of maths marks of a class. Find how many
- duplicates of each mark exist.
+ show("Hello World")
+
+ if __name__ == "__main__":
+
+ show("Hello Test")
+
+ What is printed when the script is executed.
Answer::
+ Hello World
+ Hello Test
- marks_set = set(mat_marks)
- for mark in marks_set:
- occurences = mat_marks.count(mark)
- print occurences - 1, "duplicates of", mark, "exist"
-
--- a/writing_python_scripts/quickref.tex Thu Oct 14 14:11:54 2010 +0530
+++ b/writing_python_scripts/quickref.tex Mon Oct 18 21:11:34 2010 +0530
@@ -1,11 +1,9 @@
-Creating a tuple:\\
-{\ex \lstinline| t = (1, "hello", 2.5)|}
-
-Accessing elements of tuples:\\
-{\ex \lstinline| t[index] Ex: t[2]|}
+See where python searches for modules:\\
+{\ex \lstinline| sys.path|}
-Accessing slices of tuples:\\
-{\ex \lstinline| t[start:stop:step]|}
+Include our own path in PYTHONPATH:\\
+{\ex \lstinline| sys.path.append(our_path)|}
-Swapping values:\\
-{\ex \lstinline| a, b = b, a|}
+Run certian code only if executed and not if imported:\\
+{\ex \lstinline| if __name__=="__main__": #do something|}
+
--- a/writing_python_scripts/script.rst Thu Oct 14 14:11:54 2010 +0530
+++ b/writing_python_scripts/script.rst Mon Oct 18 21:11:34 2010 +0530
@@ -1,8 +1,15 @@
.. Objectives
.. ----------
+.. By the end of this tutorial, you will be able to
+
+.. * Understand what is importing
+.. * Write your own Python modules
+.. * Understand the ``__name__=="__main__"`` idiom
+
.. Prerequisites
.. -------------
+.. 1. Using Python modules
.. Author : Nishanth Amuluru
Internal Reviewer :