#+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:    
#+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

* 
#+begin_latex
\begin{center}
\vspace{12pt}
\textcolor{blue}{\huge Using Plot Interactively}
\end{center}
\vspace{18pt}
\begin{center}
\vspace{10pt}
\includegraphics[scale=0.95]{../images/fossee-logo.png}\\
\vspace{5pt}
\scriptsize Developed by FOSSEE Team, IIT-Bombay. \\ 
\scriptsize Funded by National Mission on Education through ICT\\
\scriptsize  MHRD,Govt. of India\\
\includegraphics[scale=0.30]{../images/iitb-logo.png}\\
\end{center}
#+end_latex
* Objectives
  At the end of this tutorial, you will be able to, 
   - Create simple plots of mathematical functions.
   - Use the Figure window to study plots better.

* 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

* Exercise 1
  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. 

* Summary
  In this tutorial,we have learnt to-
  - Start Ipython with pylab. 
  - Use the linspace function to create `num` equally spaced points in a region.
  - Find the length of sequnces using len function.
  - Plot mathematical functions using plot.
  - Clear drawing area using clf. 
  - Plott mathematical functions using plot.
  - Use the UI of plot 
        - Save
        - Zoom
	- Move axis
	- Back and Forward Button
	- Home
 
* Evaluation 
  1. Create 100 equally spaced points between -pi/2 and pi/2?
  2. What will the command ''linspace(-pi,pi,100)'' do.
     - returns 100 evenly spaced samples from -pi to pi
     - returns 100 evenly spaced samples from -pi to pi excluding pi but including -pi  
     - returns 100 evenly spaced samples from -pi to pi excluding -pi but including pi
     - returns 100 evenly spaced samples from -pi to pi including both -pi and pi
  3. How do find the length of a sequence.
* Solutions...
  1. linspace(-pi/2,pi/2,100)
  2. 
returns 100 evenly spaced samples from -pi to pi including both -pi and pi
  3. len(sequence\_name)
* 
#+begin_latex
 \begin{block}{}
  \begin{center}
  \textcolor{blue}{\Large THANK YOU!} 
  \end{center}
  \end{block}
\begin{block}{}
  \begin{center}
    For more Information, visit our website\\
    \url{http://fossee.in/}
  \end{center}  
  \end{block}
#+end_latex