# HG changeset patch # User anoop # Date 1286808629 -19800 # Node ID 290f3e62dc4463820ad5b3565994c5b73f903571 # Parent 3b801e60246ade6883100cd7db09e32d66ed715e added slides for savefig. diff -r 3b801e60246a -r 290f3e62dc44 savefig/script.rst --- a/savefig/script.rst Mon Oct 11 15:55:59 2010 +0530 +++ b/savefig/script.rst Mon Oct 11 20:20:29 2010 +0530 @@ -9,8 +9,16 @@ Savefig ======= -Hello and welcome to the tutorial. In this tutorial you will learn how -to save plots using Python. +{{{ Show the first slide }}} + +Hello and welcome to the tutorial saving plots. + +{{{ switch to next slide, outline slide }}} + +In this tutorial you will learn how to save plots using Python. And +saving in different formats, and locating the file in the file system. + +{{{ switch to next slide, a sine wave}}} Start your IPython interpreter with the command :: @@ -38,9 +46,11 @@ the plot for future use so that you can embed the plot in your reports. +{{{ switch to next slide, savefig() }}} + {{{ Switch the focus to IPython interpreter window }}} -For saving the plot, we will use savefig function, and it has to be +For saving the plot, we will use ``savefig()`` function, and it has to be done with the plot window open. The statement is, :: savefig('/home/fossee/sine.png') @@ -73,6 +83,8 @@ close it and return to IPython interpreter, make sure the plot window is still open, also don't close the file browser window }}} +{{{ switch to next slide, More on savefig() }}} + So in-order to save a plot, we use ``savefig`` function. ``savefig`` can save the plot in many formats, such as pdf - portable document format, ps - post script, eps - encapsulated post script, svg - @@ -81,15 +93,19 @@ .. #[[slide must give the extensions for the files - Anoop]] +{{{ switch to next slide, exercise 1 }}} + Let us now try to save the plot in eps format. ``eps`` stands for encapsulated post script, and it can be embedded in your latex -documents. +documents. Pause here and try to figure it out yourself. {{{ Switch focus to the already open plot window }}} We still have the sine plot with us, and now let us save the plot as ``sine.eps``. +{{{ switch to next slide, solution 1 }}} + {{{ Switch focus to IPython interpreter }}} Now, We will save the plot using the function ``savefig`` :: @@ -105,10 +121,17 @@ Yes! the new file ``sine.eps`` is here. +{{{ switch to next slide, exercise 2 }}} + Now you may try saving the same in pdf, ps, svg formats. -Let us review what we have learned in this session! We have learned to -save plots in different formats using the function ``savefig()``. +{{{ Switch to summary slide }}} + +This brings us to the end of this tutorial, in this tutorial we +learned to save plots using the function ``savefig()``. Saving the +plots in different formats and locating the files in the file system. + +{{{ switch to Thank you slide }}} Thank you! diff -r 3b801e60246a -r 290f3e62dc44 savefig/slides.org --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/savefig/slides.org Mon Oct 11 20:20:29 2010 +0530 @@ -0,0 +1,99 @@ +#+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 + + diff -r 3b801e60246a -r 290f3e62dc44 savefig/slides.tex --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/savefig/slides.tex Mon Oct 11 20:20:29 2010 +0530 @@ -0,0 +1,185 @@ +% Created 2010-10-11 Mon 17:08 +\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{Savefig} +\author{FOSSEE} +\date{2010-10-11 Mon} + +\usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent} +\begin{document} + +\maketitle + + + + + + + + + +\begin{frame} +\frametitle{Outline} +\label{sec-1} + +\begin{itemize} +\item Saving plots. +\item Plotting in different formats. +\item Locating the file in the file system. +\end{itemize} +\end{frame} +\begin{frame}[fragile] +\frametitle{Creating a basic plot} +\label{sec-2} + + Plot a sine wave from -3pi to 3pi. +\begin{verbatim} +In []: x = linspace(-3*pi,3*pi,100) + +In []: plot(x, sin(x)) +\end{verbatim} +\end{frame} +\begin{frame}[fragile] +\frametitle{savefig()} +\label{sec-3} +\begin{itemize} + +\item savefig() - to save plots +\label{sec-3_1}% +\begin{verbatim} + syntax: savefig(fname) +\end{verbatim} + + +\item example +\label{sec-3_2}% +\begin{itemize} + +\item savefig('/home/fossee/sine.png') +\label{sec-3_2_1}% +\begin{itemize} +\item file sine.png saved to the folder /home/fossee +\item .png - file type +\end{itemize} + + +\end{itemize} % ends low level +\end{itemize} % ends low level +\end{frame} +\begin{frame} +\frametitle{More on savefig()} +\label{sec-4} +\begin{itemize} + +\item Recall +\label{sec-4_1}% +\begin{itemize} +\item .png - file type +\end{itemize} + + +\item File types supported +\label{sec-4_2}% +\begin{itemize} + +\item .pdf - PDF(Portable Document Format)\\ +\label{sec-4_2_1}% +\item .ps - PS(Post Script)\\ +\label{sec-4_2_2}% +\item .eps - Encapsulated Post Script\\ +\label{sec-4_2_3}% +\texttt{to be used with} \LaTeX{} \texttt{documents} + +\item .svg - Scalable Vector Graphics\\ +\label{sec-4_2_4}% +\texttt{vector graphics} + +\item .png - Portable Network Graphics\\ +\label{sec-4_2_5}% +\texttt{supports transparency} +\end{itemize} % ends low level +\end{itemize} % ends low level +\end{frame} +\begin{frame} +\frametitle{Exercise 1} +\label{sec-5} + + Save the sine plot in the format EPS which can be embedded in \LaTeX{} documents. +\end{frame} +\begin{frame}[fragile] +\frametitle{Solution 1} +\label{sec-6} + +\begin{verbatim} +savefig('/home/fossee/sine.eps') +\end{verbatim} +\end{frame} +\begin{frame} +\frametitle{Exercise 2} +\label{sec-7} + + Save the sine plot in PDF, PS and SVG formats. +\end{frame} +\begin{frame} +\frametitle{Summary} +\label{sec-8} + + You should now be able to +\begin{itemize} +\item Use \texttt{savefig()} function +\item Save plots in different formats + +\begin{itemize} +\item PDF +\item PS +\item PNG +\item SVG +\item EPS +\end{itemize} + +\item Locating the files in file system. +\end{itemize} + + +\end{frame} +\begin{frame} +\frametitle{Thank you!} +\label{sec-9} + + \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}