9 files changed, 415 insertions, 0 deletions

diff --git a/using_plot_interactively/buttons.png b/using_plot_interactively/buttons.png
new file mode 100644
index 0000000..7b39d24
--- /dev/null
+++ b/using_plot_interactively/buttons.png
diff --git a/using_plot_interactively/home.png b/using_plot_interactively/home.png
new file mode 100644
index 0000000..dd21f5b
--- /dev/null
+++ b/using_plot_interactively/home.png
diff --git a/using_plot_interactively/move.png b/using_plot_interactively/move.png
new file mode 100644
index 0000000..538ed1f
--- /dev/null
+++ b/using_plot_interactively/move.png
diff --git a/using_plot_interactively/quickref.tex b/using_plot_interactively/quickref.tex
new file mode 100644
index 0000000..6f0451f
--- /dev/null
+++ b/using_plot_interactively/quickref.tex
@@ -0,0 +1,14 @@
+Creating a linear array:\\
+{\ex \lstinline|    x = linspace(0, 2*pi, 50)|}
+
+Plotting two variables:\\
+{\ex \lstinline|    plot(x, sin(x))|}
+
+Saving Plot\\
+{\includegraphics[width=60mm]{save.png}}
+
+Zooming into a part of the plot\\
+{\includegraphics[width=60mm]{zoom.png}}
+
+Move the plot\\
+{\includegraphics[width=60mm]{move.png}}
diff --git a/using_plot_interactively/save.png b/using_plot_interactively/save.png
new file mode 100644
index 0000000..b1a6757
--- /dev/null
+++ b/using_plot_interactively/save.png
diff --git a/using_plot_interactively/script.rst b/using_plot_interactively/script.rst
new file mode 100644
index 0000000..cd2ee6a
--- /dev/null
+++ b/using_plot_interactively/script.rst
@@ -0,0 +1,226 @@
+.. Objectives
+.. ----------
+
+.. By the end of this tutorial you will --
+
+.. 1. Create simple plots of mathematical functions
+.. #. Use the Figure window to study plots better
+
+
+
+.. Prerequisites
+.. -------------
+
+.. Installation of required tools
+.. Ipython
+     
+.. Author              : Amit Sethi
+   Internal Reviewer   : 
+   External Reviewer   :
+   Checklist OK?       : <put date stamp here, if OK> [2010-10-05]
+
+Script
+-------
+{{{ Show the Title Slide }}} 
+
+Hello and welcome to the tutorial on creating simple plots using
+Python.This tutorial is presented by the Fossee group.  
+
+I hope you have IPython running on your computer.
+
+In this tutorial we will look at plot command and also how to study
+the plot using the UI.
+
+{{{ Show Outline Slide }}}
+
+Lets start ipython on your shell, type :: 
+
+      $ipython -pylab
+
+
+Pylab is a python library which provides plotting functionality.It
+also provides many other important mathematical and scientific
+functions. After running IPython -pylab in your shell if at the top of
+the result of this command, you see something like ::
+ 
+
+   `ERROR: matplotlib could NOT be imported!  Starting normal
+      IPython.`
+
+
+{{{ Slide with Error written on it }}}
+
+
+Then you have to install matplotlib and run this command again.
+
+Now type in your ipython shell ::
+
+             linpace?
+
+
+
+as the documentation says, it returns `num` evenly spaced samples,
+calculated over the interval start and stop.  To illustrate this, lets
+do it form 1 to 100 and try 100 points.  ::
+
+            linspace(1,100,100)
+
+As you can see a sequence of numbers from 1 to 100 appears.
+
+Now lets try 200 points between 0 and 1 you do this by typing ::
+
+
+             linspace(0,1,200)
+
+0 for start , 1 for stop and 200 for no of points.  In linspace 
+the start and stop points can be integers, decimals , or
+constants. Let's try and get 100 points between -pi to pi. Type ::
+           
+             p = linspace(-pi,pi,100)
+
+
+'pi' here is constant defined by pylab. Save this to the variable, p
+.
+
+If you now ::
+     
+	    len(p)
+
+You will get the no. of points. len function gives the no of elements
+of a sequence.
+
+
+Let's try and plot a cosine curve between -pi and pi using these
+points.  Simply type::
+
+	 plot(p,cos(points)) 
+
+
+Here cos(points) gets the cosine value at every corresponding point to
+p.
+
+
+We can also save cos(points) to variable cosine and plot it using
+plot.::
+
+          cosine=cos(points) 
+
+	  plot(p,cosine)
+
+ 
+
+Now do ::
+       	 
+	  clf()
+
+this will clear the plot.
+
+This is done because any other plot we try to make shall come on the
+same drawing area. As we do not wish to clutter the area with
+overlaid plots , we just clear it with clf().  Now lets try a sine
+plot. ::
+
+
+    	  plot(p,sin(p))
+
+
+
+ 
+The Window on which the plot appears can be used to study it better.
+
+{{{ Show the slide with all the buttons on it }}}
+
+First of all moving the mouse around gives us the point where mouse
+points at.  
+
+Also we have some buttons the right most among them is
+for saving the file. 
+
+Just click on it specifying the name of the file.  We will save the plot 
+by the name sin_curve in pdf format.
+
+
+
+{{{ Show how to save the file  }}}
+
+As you can see I can specify format of file from the dropdown.
+
+Formats like png ,eps ,pdf, ps are available.
+
+Left to the save button is the slider button to specify the margins.
+
+{{{ Show how to zoom. Press zoom button and specify region to zoom }}}
+
+Left to this is zoom button to zoom into the plot. Just specify the 
+region to zoom into.  
+
+{{{ Press Move button and move the axes. }}}
+
+The button left to it can be used to move the axes of the plot.  
+
+{{{ Press Back and Forward Button }}}
+ 
+The next two buttons with a left and right arrow icons change the state of the 
+plot and take it to the previous state it was in. It more or less acts like a
+back and forward button in the browser.  
+
+{{{ Press home button }}}
+
+The last one is 'home' referring to the initial plot.
+
+
+
+
+Following is an  exercise that you must do. 
+
+%% %% Plot (sin(x)*sin(x))/x .
+      1. Save the plot by the sinsquarebyx.pdf in pdf format.
+      2. Zoom and find the maxima.
+
+      3. Bring it back to initial position.
+
+
+Please, pause the video here. Do the exercise and then continue. 
+
+
+
+
+
+
+
+
+
+{{{ Summary Slide }}}
+
+In this tutorial we have looked at 
+
+1. Starting Ipython with pylab 
+
+2. Using linspace function to create `num` equaly spaced points in a region.
+
+3. Finding length of sequnces using  len.
+ 
+4. Plotting mathematical functions using plot.
+
+4. Clearing drawing area using clf 
+ 
+5. Using the UI of plot for studying it better . Using functionalities like save , zoom and moving the plots on x and y axis 
+
+
+ {{{ 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              : Amit Sethi
+Internal Reviewer   :
+Internal Reviewer 2 : 
diff --git a/using_plot_interactively/slides.org b/using_plot_interactively/slides.org
new file mode 100644
index 0000000..ca0ff12
--- /dev/null
+++ b/using_plot_interactively/slides.org
@@ -0,0 +1,76 @@
+#+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 Plot Interactively
+#+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
+  - Plot a simple mathemaical function.
+  - Using the User Interface of plot figure.
+
+* Error if Ipython not installed 
+
+** `ERROR: matplotlib could NOT be imported!  Starting normal IPython.`
+
+
+* Plot UI
+#+begin_latex
+   \includegraphics[height=0.12in, interpolate=true]{buttons}
+#+end_latex   
+  - Save
+  - Zoom
+  - Move axis
+  - Back and Forward Button
+  - Home
+
+    
+* Summary
+  - Plotting mathematical functions using plot.
+  -  Using the UI of plot 
+        - Save
+        - Zoom
+	- Move axis
+	- Back and Forward Button
+	- Home
+ 
+* 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
+
+
diff --git a/using_plot_interactively/slides.tex b/using_plot_interactively/slides.tex
new file mode 100644
index 0000000..2e1d36b
--- /dev/null
+++ b/using_plot_interactively/slides.tex
@@ -0,0 +1,99 @@
+% Created 2010-11-11 Thu 13:15
+\documentclass[presentation]{beamer}
+\usepackage[latin1]{inputenc}
+\usepackage[T1]{fontenc}
+\usepackage{fixltx2e}
+\usepackage{graphicx}
+\usepackage{longtable}
+\usepackage{float}
+\usepackage{wrapfig}
+\usepackage{soul}
+\usepackage{t1enc}
+\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}}
+
+\title{Using Plot Interactively}
+\author{FOSSEE}
+\date{}
+
+\usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent}
+\begin{document}
+
+\maketitle
+
+
+
+
+
+
+
+
+
+\begin{frame}
+\frametitle{Outline}
+\label{sec-1}
+
+  How to plot a simple mathematical function.
+  Using the User Interface of plot figure.
+\end{frame}
+\begin{frame}
+\frametitle{Error if Ipython not installed}
+\label{sec-2}
+\begin{itemize}
+
+\item `ERROR: matplotlib could NOT be imported!  Starting normal IPython.`\\
+\label{sec-2_1}%
+\end{itemize} % ends low level
+\end{frame}
+\begin{frame}
+\frametitle{Plot UI}
+\label{sec-3}
+
+   \includegraphics[height=0.12in, interpolate=true]{buttons}
+\begin{itemize}
+\item Save
+\item Zoom
+\item Move axis
+\item Back and Forward Button
+\item Home
+\end{itemize}
+
+
+    
+\end{frame}
+\begin{frame}
+\frametitle{Summary}
+\label{sec-4}
+
+\begin{itemize}
+\item Plotting mathematical functions using plot.
+   \includegraphics[height=0.12in, interpolate=true]{buttons}
+\item Using the UI of plot
+
+\begin{itemize}
+\item Save
+\item Zoom
+\item Move axis
+\item Back and Forward Button
+\item Home
+\end{itemize}
+
+\end{itemize}
+
+  
+  
+\end{frame}
+
+\end{document}
diff --git a/using_plot_interactively/zoom.png b/using_plot_interactively/zoom.png
new file mode 100644
index 0000000..c1a7fdf
--- /dev/null
+++ b/using_plot_interactively/zoom.png