#+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: Savefig
#+AUTHOR: FOSSEE
#+EMAIL: info@fossee.in    
#+DATE: 2010-10-11 Mon

#+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
  - Saving plots.
  - Plotting in different formats.
  - Locating the file in the file system.

* Creating a basic plot
  Plot a sine wave from -3pi to 3pi.
  #+begin_src python
    In []: x = linspace(-3*pi,3*pi,100)
    
    In []: plot(x, sin(x))
  #+end_src
* savefig()
** savefig() - to save plots
   : syntax: savefig(fname)
** example
*** savefig('/home/fossee/sine.png')    
   - file sine.png saved to the folder /home/fossee
   - .png - file type

* More on savefig()
** Recall
   - .png - file type
** File types supported
*** .pdf - PDF(Portable Document Format)
*** .ps - PS(Post Script)
*** .eps - Encapsulated Post Script
    ~to be used with~ LaTeX ~documents~
*** .svg - Scalable Vector Graphics
    ~vector graphics~
*** .png - Portable Network Graphics
    ~supports transparency~
* Exercise 1
  Save the sine plot in the format EPS which can be embedded in LaTeX documents.
* Solution 1
  #+begin_src python
    savefig('/home/fossee/sine.eps')
  #+end_src
* Exercise 2
  Save the sine plot in PDF, PS and SVG formats.

* Summary
  You should now be able to
  - Use ~savefig()~ function
  - Save plots in different formats
      - PDF
      - PS
      - PNG
      -	SVG
      - EPS
  - Locating the files in file system.
    
* 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