day1/session2.tex
author Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
Mon, 28 Jun 2010 00:14:02 -0500 (2010-06-28)
branchscipy2010
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parent 408 217c38c06ebd
child 441 9d9e4026238f
permissions -rw-r--r--
Adding an acknowledgement slide to session 1. Minor changes to session 2.
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%Tutorial slides on Python.
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%
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% Author: FOSSEE
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% Copyright (c) 2009, FOSSEE, IIT Bombay
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\documentclass[14pt,compress]{beamer}
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%\documentclass[draft]{beamer}
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%\documentclass[compress,handout]{beamer}
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%\usepackage{pgfpages} 
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%\pgfpagesuselayout{2 on 1}[a4paper,border shrink=5mm]
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% Modified from: generic-ornate-15min-45min.de.tex
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\mode<presentation>
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{
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  \usetheme{Warsaw}
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  \useoutertheme{infolines}
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  \setbeamercovered{transparent}
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}
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\usepackage[english]{babel}
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\usepackage[latin1]{inputenc}
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%\usepackage{times}
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\usepackage[T1]{fontenc}
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% Taken from Fernando's slides.
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\usepackage{ae,aecompl}
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\usepackage{mathpazo,courier,euler}
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\usepackage[scaled=.95]{helvet}
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\definecolor{darkgreen}{rgb}{0,0.5,0}
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\usepackage{listings}
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\lstset{language=Python,
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    basicstyle=\ttfamily\bfseries,
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    commentstyle=\color{red}\itshape,
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  stringstyle=\color{darkgreen},
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  showstringspaces=false,
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  keywordstyle=\color{blue}\bfseries}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% Macros
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\setbeamercolor{emphbar}{bg=blue!20, fg=black}
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\newcommand{\emphbar}[1]
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{\begin{beamercolorbox}[rounded=true]{emphbar} 
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      {#1}
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 \end{beamercolorbox}
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}
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\newcounter{time}
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\setcounter{time}{0}
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\newcommand{\inctime}[1]{\addtocounter{time}{#1}{\tiny \thetime\ m}}
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\newcommand{\typ}[1]{\lstinline{#1}}
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\newcommand{\kwrd}[1]{ \texttt{\textbf{\color{blue}{#1}}}  }
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%%% This is from Fernando's setup.
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% \usepackage{color}
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% \definecolor{orange}{cmyk}{0,0.4,0.8,0.2}
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% % Use and configure listings package for nicely formatted code
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% \usepackage{listings}
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% \lstset{
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%    language=Python,
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%    basicstyle=\small\ttfamily,
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%    commentstyle=\ttfamily\color{blue},
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%    stringstyle=\ttfamily\color{orange},
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%    showstringspaces=false,
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%    breaklines=true,
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%    postbreak = \space\dots
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% }
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% Title page
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\title[Plotting with Python]{Python for Science and Engg: Plotting experimental data}
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\author[FOSSEE group] {FOSSEE}
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\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay}
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\date[] {SciPy 2010, Introductory tutorials,\\Day 1, Session 2}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%\pgfdeclareimage[height=0.75cm]{iitmlogo}{iitmlogo}
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%\logo{\pgfuseimage{iitmlogo}}
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%% Delete this, if you do not want the table of contents to pop up at
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%% the beginning of each subsection:
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\AtBeginSubsection[]
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{
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  \begin{frame}<beamer>
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    \frametitle{Outline}
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    \tableofcontents[currentsection,currentsubsection]
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  \end{frame}
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}
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\AtBeginSection[]
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{
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  \begin{frame}<beamer>
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    \frametitle{Outline}
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    \tableofcontents[currentsection,currentsubsection]
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  \end{frame}
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}
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% If you wish to uncover everything in a step-wise fashion, uncomment
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% the following command: 
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%\beamerdefaultoverlayspecification{<+->}
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%\includeonlyframes{current,current1,current2,current3,current4,current5,current6}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% DOCUMENT STARTS
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\begin{document}
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\begin{frame}
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  \titlepage
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\end{frame}
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\begin{frame}
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  \frametitle{Outline}
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  \tableofcontents
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  % You might wish to add the option [pausesections]
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\end{frame}
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\section{Plotting Points}
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\begin{frame}[fragile]
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\frametitle{Why would I plot f(x)?}
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Do we plot analytical functions or experimental data?
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\begin{small}
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\begin{lstlisting}
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In []: time = [0, 1, 2, 3]
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In []: distance = [7, 11, 15, 19]
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In []: plot(time,distance)
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Out[]: [<matplotlib.lines.Line2D object at 0xa73aa8c>]
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In []: xlabel('time')
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Out[]: <matplotlib.text.Text object at 0x986e9ac>
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In []: ylabel('distance')
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Out[]: <matplotlib.text.Text object at 0x98746ec>
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\end{lstlisting}
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\end{small}
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\end{frame}
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\begin{frame}[fragile]
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\begin{figure}
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\includegraphics[width=3.5in]{data/straightline.png}
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\end{figure}
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\alert{Is this what you have?}
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{Plotting points}
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\begin{itemize}
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\item What if we want to plot the points?
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\end{itemize}
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\begin{lstlisting}
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  In []: clf()
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  In []: plot(time, distance, 'o')
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  Out[]: [<matplotlib.lines.Line2D object at 0xac17e0c>]
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  In []: clf()
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  In []: plot(time, distance, '.')
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  Out[]: [<matplotlib.lines.Line2D object at 0xac17e0c>]
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\end{lstlisting}
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\end{frame}
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\begin{frame}[fragile]
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\begin{figure}
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\includegraphics[interpolate=true,width=2.35in]{data/stline_dots.png}
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\includegraphics[interpolate=true,width=2.35in]{data/stline_points.png}
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\end{figure}
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{Additional Line Styles}
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\begin{itemize}
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  \item \typ{'o'} - Filled circles
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  \item \typ{'.'} - Small Dots
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  \item \typ{'-'} - Lines
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  \item \typ{'--'} - Dashed lines
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\end{itemize}
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\end{frame}
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\section{Lists}
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\begin{frame}[fragile]
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  \frametitle{Lists: Introduction}
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  \begin{lstlisting}
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    In []: time = [0, 1, 2, 3]
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    In []: distance = [7, 11, 15, 19]
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  \end{lstlisting}
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What are \typ{x} and \typ{y}?\\
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\begin{center}
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\alert{\typ{lists!!}}
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\end{center}
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{Lists: Initializing \& accessing elements}
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\begin{lstlisting}
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In []: mtlist = [] 
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\end{lstlisting}
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\emphbar{Empty List}
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\begin{lstlisting}
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In []: p = [ 2, 3, 5, 7] 
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379
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In []: p[1]
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Out[]: 3
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In []: p[0]+p[1]+p[-1]
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Out[]: 12
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\end{lstlisting}
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\end{frame}
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\begin{frame}[fragile]
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  \frametitle{List: Slicing}
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  \begin{block}{Remember\ldots}
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	\kwrd{In []: p = [ 2, 3, 5, 7]}
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  \end{block}
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\begin{lstlisting}
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In []: p[1:3]
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Out[]: [3, 5]
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\end{lstlisting}
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\emphbar{A slice}
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\begin{lstlisting}
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In []: p[0:-1]
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Out[]: [2, 3, 5]
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In []: p[::2]
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Out[]: [2, 5]
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\end{lstlisting}
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\alert{\typ{list[initial:final:step]}}
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\end{frame}
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408
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\begin{frame}[fragile]
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  \frametitle{List: Slicing}
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  What is the output of the following?
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\begin{lstlisting}
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In []: p[1::2]
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In []: p[1:-1:2]
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\end{lstlisting}
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\end{frame}
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263
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%% more on list slicing
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\begin{frame}[fragile]
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\frametitle{List operations}
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\begin{lstlisting}
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In []: b = [ 11, 13, 17]
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In []: c = p + b
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In []: c
373
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Out[]: [2, 3, 5, 7, 11, 13, 17]
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373
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In []: p.append(11)
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In []: p
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Out[]: [ 2, 3, 5, 7, 11]
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\end{lstlisting}
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Question: Does \typ{c} change now that \typ{p} is changed?
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%\inctime{10}
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\end{frame}
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\section{Simple Pendulum}
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\begin{frame}[fragile]
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\frametitle{Simple Pendulum - L and T}
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Let us look at the Simple Pendulum experiment.
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\begin{center}
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\begin{small}
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\begin{tabular}{| c | c | c |}
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\hline
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$L$ & $T$ & $T^2$ \\ \hline
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0.1 & 0.69 & \\ \hline
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0.2 & 0.90 & \\ \hline
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0.3 & 1.19 & \\ \hline
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0.4 & 1.30 & \\ \hline
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0.5 & 1.47 & \\ \hline
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0.6 & 1.58 & \\ \hline
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0.7 & 1.77 & \\ \hline
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0.8 & 1.83 & \\ \hline
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0.9 & 1.94 & \\ \hline
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\end{tabular}
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\end{small}\\
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\alert{$L \alpha T^2$}
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\end{center}
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{Lets use lists}
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\begin{lstlisting}
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In []: L = [0.1, 0.2, 0.3, 0.4, 0.5, 
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            0.6, 0.7, 0.8, 0.9]
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301
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In []: t = [0.69, 0.90, 1.19, 
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            1.30, 1.47, 1.58, 
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            1.77, 1.83, 1.94]
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\end{lstlisting}
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\alert{Gotcha}: Make sure \typ{L} and \typ{t} have the same number
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of elements
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\begin{lstlisting}
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In []: print len(L), len(t)
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\end{lstlisting}
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193
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{Plotting $L$ vs $T^2$}
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\begin{itemize}
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\item We must square each of the values in \typ{t}
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\item How do we do it?
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\item We use a \kwrd{for} loop to iterate over \typ{t}
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\end{itemize}
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{Plotting $L$ vs $T^2$}
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\begin{lstlisting}
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In []: tsq = []
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290
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In []: for time in t:
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 ....:     tsq.append(time*time)
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 ....:
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 ....:
158
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\end{lstlisting}
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This gives \typ{tsq} which is the list of squares of \typ{t} values.
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\begin{lstlisting}
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In []: print len(L), len(t), len(tsq)
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Out[]: 9 9 9
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\end{lstlisting}
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\end{frame}
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\begin{frame}[fragile]
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  \frametitle{How do you exit the \texttt{for} loop?}
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  Hitting the ``ENTER'' key twice returns the cursor to the previous indentation level
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  \begin{lstlisting}
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    In []: for time in t:
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     ....:     tsq.append(time*time)
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     ....:     
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     ....:     
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381
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    In []: plot(L, tsq)
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  \end{lstlisting}
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\end{frame}
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\begin{frame}[fragile]
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\begin{figure}
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\includegraphics[width=3.5in]{data/L-TSq-limited.png}
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\end{figure}
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\end{frame}
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\begin{frame}[fragile]
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\frametitle{What about larger data sets?}
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\alert{Data is usually present in a file!} \\
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   361
Lets look at the \typ{pendulum.txt} file.
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\begin{lstlisting} 
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   363
In []: cat pendulum.txt 
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1.0000e-01 6.9004e-01
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   365
1.1000e-01 6.9497e-01
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   366
1.2000e-01 7.4252e-01
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1.3000e-01 7.5360e-01
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\end{lstlisting}  %$
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\ldots
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\end{frame}
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\begin{frame}[fragile]
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   373
\frametitle{Reading \typ{pendulum.txt}}
161
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parents: 160
diff changeset
   374
\begin{itemize}
408
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parents: 397
diff changeset
   375
  \item File contains L vs.\ T values 
379
682b6f66fe11 Updated for day1 of GRD workshop.
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parents: 378
diff changeset
   376
  \item First Column - L values
682b6f66fe11 Updated for day1 of GRD workshop.
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parents: 378
diff changeset
   377
  \item Second Column - T values
274
34f71bdd0263 Loads of changes done.
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parents: 253
diff changeset
   378
  \item Let us generate a plot from the data file
161
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diff changeset
   379
\end{itemize}
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diff changeset
   380
\end{frame}
109
16e04782baac Added session2.tex.
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parents:
diff changeset
   381
161
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diff changeset
   382
\begin{frame}[fragile]
408
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parents: 397
diff changeset
   383
    \frametitle{Gotcha and an aside}
217c38c06ebd ENH: Minor changes to session 2.
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parents: 397
diff changeset
   384
    Ensure you are in the same directory as \typ{pendulum.txt}\\
217c38c06ebd ENH: Minor changes to session 2.
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parents: 397
diff changeset
   385
    if not, do the following on IPython:
217c38c06ebd ENH: Minor changes to session 2.
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parents: 397
diff changeset
   386
    \begin{lstlisting}
217c38c06ebd ENH: Minor changes to session 2.
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parents: 397
diff changeset
   387
In []: %cd directory_containing_file
217c38c06ebd ENH: Minor changes to session 2.
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parents: 397
diff changeset
   388
# Check if pendulum.txt is there.
217c38c06ebd ENH: Minor changes to session 2.
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parents: 397
diff changeset
   389
In []: ls
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   390
# Also try 
217c38c06ebd ENH: Minor changes to session 2.
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parents: 397
diff changeset
   391
In []: !ls
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   392
    \end{lstlisting}
217c38c06ebd ENH: Minor changes to session 2.
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parents: 397
diff changeset
   393
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   394
    \alert{Note:} \typ{\%cd} is an IPython magic command.  For more information
217c38c06ebd ENH: Minor changes to session 2.
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parents: 397
diff changeset
   395
    do:
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   396
    \begin{lstlisting}
217c38c06ebd ENH: Minor changes to session 2.
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parents: 397
diff changeset
   397
In []: ?
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   398
    \end{lstlisting}
217c38c06ebd ENH: Minor changes to session 2.
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parents: 397
diff changeset
   399
\end{frame}
217c38c06ebd ENH: Minor changes to session 2.
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parents: 397
diff changeset
   400
217c38c06ebd ENH: Minor changes to session 2.
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parents: 397
diff changeset
   401
217c38c06ebd ENH: Minor changes to session 2.
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parents: 397
diff changeset
   402
\begin{frame}[fragile]
290
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 286
diff changeset
   403
\frametitle{Plotting from \typ{pendulum.txt}}
408
217c38c06ebd ENH: Minor changes to session 2.
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parents: 397
diff changeset
   404
Open a new script and save as \typ{pendulum_plot.py}
161
ff22fae4fde5 Adding reading files and plotting to day1 session1.
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parents: 160
diff changeset
   405
\begin{lstlisting}
381
b797cd67982b Updated changes from GRDCS.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 379
diff changeset
   406
L = []
290
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
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parents: 286
diff changeset
   407
t = []
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
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parents: 286
diff changeset
   408
for line in open('pendulum.txt'):
301
49bdffe4dca5 Updated session 2 slides of day 1 and added cheatsheets of day 2.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 300
diff changeset
   409
    point = line.split()
381
b797cd67982b Updated changes from GRDCS.
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parents: 379
diff changeset
   410
    L.append(float(point[0]))
301
49bdffe4dca5 Updated session 2 slides of day 1 and added cheatsheets of day 2.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 300
diff changeset
   411
    t.append(float(point[1]))
290
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 286
diff changeset
   412
tsq = []
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 286
diff changeset
   413
for time in t:
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 286
diff changeset
   414
    tsq.append(time*time)
381
b797cd67982b Updated changes from GRDCS.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 379
diff changeset
   415
plot(L, tsq, '.')
109
16e04782baac Added session2.tex.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
diff changeset
   416
\end{lstlisting}
16e04782baac Added session2.tex.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
diff changeset
   417
\end{frame}
16e04782baac Added session2.tex.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
diff changeset
   418
290
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 286
diff changeset
   419
\begin{frame}
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 286
diff changeset
   420
\frametitle{Save and run}
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 286
diff changeset
   421
\begin{itemize}
408
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   422
    \item Save as \typ{pendulum\_plot.py}
290
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 286
diff changeset
   423
  \item Run using \kwrd{\%run -i pendulum\_plot.py}
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 286
diff changeset
   424
\end{itemize}
161
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   425
\end{frame}
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   426
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   427
\begin{frame}[fragile]
198
4cb13665b3b6 Updated session 2 slides and added 4 graphs to data directory.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 195
diff changeset
   428
\begin{figure}
4cb13665b3b6 Updated session 2 slides and added 4 graphs to data directory.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 195
diff changeset
   429
\includegraphics[width=3.5in]{data/L-Tsq.png}
4cb13665b3b6 Updated session 2 slides and added 4 graphs to data directory.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 195
diff changeset
   430
\end{figure}
4cb13665b3b6 Updated session 2 slides and added 4 graphs to data directory.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 195
diff changeset
   431
\end{frame}
4cb13665b3b6 Updated session 2 slides and added 4 graphs to data directory.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 195
diff changeset
   432
4cb13665b3b6 Updated session 2 slides and added 4 graphs to data directory.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 195
diff changeset
   433
\begin{frame}[fragile]
161
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   434
  \frametitle{Reading files \ldots}
290
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 286
diff changeset
   435
\typ{for line in open('pendulum.txt'):}
161
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   436
\begin{itemize}
274
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   437
\item opening file `\typ{pendulum.txt}'
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   438
\item reading the file line by line
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   439
\item \typ{line} is a \kwrd{string}
161
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   440
\end{itemize}
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   441
\end{frame}
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   442
193
a31b0e76c0fb Revamped session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 179
diff changeset
   443
\section{Strings}
408
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   444
161
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   445
\begin{frame}[fragile]
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   446
\frametitle{Strings}
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   447
Anything within ``quotes'' is a string!
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   448
\begin{lstlisting}
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   449
' This is a string '  
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   450
" This too! "
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   451
""" This one too! """
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   452
''' And one more! '''
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   453
\end{lstlisting}
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   454
\end{frame}
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   455
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   456
\begin{frame}[fragile]
408
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   457
\frametitle{Strings}
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   458
Why so many?
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   459
\begin{lstlisting}
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   460
' "Do or do not.  No try." said Yoda.'  
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   461
" ' is a mighty lonely quote."
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   462
\end{lstlisting}
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   463
The triple quoted ones can span multiple lines!
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   464
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   465
\begin{lstlisting}
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   466
""" The quick brown
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   467
fox jumped over
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   468
    the lazy dingbat. 
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   469
"""
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   470
\end{lstlisting}
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   471
\end{frame}
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   472
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   473
\begin{frame}[fragile]
161
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   474
\frametitle{Strings and \typ{split()}}
109
16e04782baac Added session2.tex.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
diff changeset
   475
  \begin{lstlisting}
274
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   476
In []: greet = 'hello world'
109
16e04782baac Added session2.tex.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
diff changeset
   477
274
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   478
In []: greet.split()
130
8905a5badd7e Minor edits to day1 session2.
Puneeth Chaganti <punchagan@fossee.in>
parents: 118
diff changeset
   479
Out[]: ['hello', 'world']
109
16e04782baac Added session2.tex.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
diff changeset
   480
  \end{lstlisting}
161
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   481
This is what happens with \typ{line}
109
16e04782baac Added session2.tex.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
diff changeset
   482
  \begin{lstlisting}
330
46533051b9d3 commited changes made for scipy and cheatsheats.
Shantanu <shantanu@fossee.in>
parents: 319
diff changeset
   483
In []: line = '1.20 7.42'
109
16e04782baac Added session2.tex.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
diff changeset
   484
301
49bdffe4dca5 Updated session 2 slides of day 1 and added cheatsheets of day 2.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 300
diff changeset
   485
In []: point = line.split()
49bdffe4dca5 Updated session 2 slides of day 1 and added cheatsheets of day 2.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 300
diff changeset
   486
49bdffe4dca5 Updated session 2 slides of day 1 and added cheatsheets of day 2.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 300
diff changeset
   487
In []: point
330
46533051b9d3 commited changes made for scipy and cheatsheats.
Shantanu <shantanu@fossee.in>
parents: 319
diff changeset
   488
Out[]: ['1.20', '7.42']
109
16e04782baac Added session2.tex.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
diff changeset
   489
  \end{lstlisting}
16e04782baac Added session2.tex.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
diff changeset
   490
\end{frame}
16e04782baac Added session2.tex.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
diff changeset
   491
161
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   492
\begin{frame}[fragile]
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   493
\frametitle{Getting floats from strings}
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   494
  \begin{lstlisting}
301
49bdffe4dca5 Updated session 2 slides of day 1 and added cheatsheets of day 2.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 300
diff changeset
   495
In []: type(point[0])
161
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   496
Out[]: <type 'str'>
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   497
  \end{lstlisting}
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   498
But, we need floating point numbers
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   499
  \begin{lstlisting}
301
49bdffe4dca5 Updated session 2 slides of day 1 and added cheatsheets of day 2.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 300
diff changeset
   500
In []: t = float(point[0])
161
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   501
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   502
In []: type(t)
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   503
Out[]: <type 'float'>
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   504
  \end{lstlisting}
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   505
\end{frame}
ff22fae4fde5 Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents: 160
diff changeset
   506
274
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   507
\begin{frame}[fragile]
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   508
\frametitle{Let's review the code}
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   509
\begin{lstlisting}
381
b797cd67982b Updated changes from GRDCS.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 379
diff changeset
   510
L = []
290
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 286
diff changeset
   511
t = []
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 286
diff changeset
   512
for line in open('pendulum.txt'):
301
49bdffe4dca5 Updated session 2 slides of day 1 and added cheatsheets of day 2.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 300
diff changeset
   513
    point = line.split()
381
b797cd67982b Updated changes from GRDCS.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 379
diff changeset
   514
    L.append(float(point[0]))
301
49bdffe4dca5 Updated session 2 slides of day 1 and added cheatsheets of day 2.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 300
diff changeset
   515
    t.append(float(point[1]))
290
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 286
diff changeset
   516
tsq = []
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 286
diff changeset
   517
for time in t:
10528e3073ef Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 286
diff changeset
   518
    tsq.append(time*time)
381
b797cd67982b Updated changes from GRDCS.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 379
diff changeset
   519
plot(L, tsq, '.')
274
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   520
\end{lstlisting}
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   521
\end{frame}
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   522
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   523
\begin{frame}[fragile]
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   524
\begin{figure}
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   525
\includegraphics[width=3.5in]{data/L-Tsq.png}
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   526
\end{figure}
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   527
\end{frame}
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   528
193
a31b0e76c0fb Revamped session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 179
diff changeset
   529
\section {Summary}
274
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   530
\begin{frame}[fragile]
34f71bdd0263 Loads of changes done.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 253
diff changeset
   531
\frametitle{What did we learn?}
193
a31b0e76c0fb Revamped session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 179
diff changeset
   532
\begin{itemize}
408
217c38c06ebd ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents: 397
diff changeset
   533
  \item Plot attributes and plotting points
193
a31b0e76c0fb Revamped session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 179
diff changeset
   534
  \item Lists
a31b0e76c0fb Revamped session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 179
diff changeset
   535
  \item \kwrd{for}
a31b0e76c0fb Revamped session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 179
diff changeset
   536
  \item Reading files
301
49bdffe4dca5 Updated session 2 slides of day 1 and added cheatsheets of day 2.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 300
diff changeset
   537
  \item Tokenizing
193
a31b0e76c0fb Revamped session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 179
diff changeset
   538
  \item Strings
a31b0e76c0fb Revamped session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 179
diff changeset
   539
\end{itemize}
a31b0e76c0fb Revamped session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 179
diff changeset
   540
\end{frame}
a31b0e76c0fb Revamped session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents: 179
diff changeset
   541
109
16e04782baac Added session2.tex.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
diff changeset
   542
\end{document}
343
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   543
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   544
%% Questions for Quiz %%
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   545
%% ------------------ %%
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   546
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   547
\begin{frame}[fragile]
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   548
\frametitle{\incqno }
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   549
  \begin{lstlisting}
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   550
  In []: a = [1, 2, 5, 9]
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   551
  In []: a[0:-1]
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   552
  \end{lstlisting}
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   553
  What is the output?
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   554
\end{frame}
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   555
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   556
\begin{frame}
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   557
\frametitle{\incqno }
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   558
  How do you combine two lists \emph{a} and \emph{b} to produce one list?
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   559
\end{frame}
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   560
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   561
\begin{frame}[fragile]
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   562
\frametitle{\incqno }
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   563
  \begin{lstlisting}
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   564
  In []: a = [1, 2, 5, 9]
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   565
  \end{lstlisting}
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   566
  How do you add the value 10 to the end of this list?
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   567
\end{frame}
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   568
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   569
\begin{frame}
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   570
\frametitle{\incqno }
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   571
Write the code to read a file \texttt{data.txt} and print each line of it?
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   572
\end{frame}
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   573
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   574
\begin{frame}[fragile]
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   575
\frametitle{\incqno }
352
b44d7bcc6609 Added a few quiz questions; Minor edits.
Puneeth Chaganti <punchagan@fossee.in>
parents: 343
diff changeset
   576
What would be the result of the following code snippet:
b44d7bcc6609 Added a few quiz questions; Minor edits.
Puneeth Chaganti <punchagan@fossee.in>
parents: 343
diff changeset
   577
\begin{lstlisting}
b44d7bcc6609 Added a few quiz questions; Minor edits.
Puneeth Chaganti <punchagan@fossee.in>
parents: 343
diff changeset
   578
In []: x = linspace(0, 10, 50)
b44d7bcc6609 Added a few quiz questions; Minor edits.
Puneeth Chaganti <punchagan@fossee.in>
parents: 343
diff changeset
   579
In []: y = linspace(50, 100, 100)
b44d7bcc6609 Added a few quiz questions; Minor edits.
Puneeth Chaganti <punchagan@fossee.in>
parents: 343
diff changeset
   580
In []: plot(x, y)
b44d7bcc6609 Added a few quiz questions; Minor edits.
Puneeth Chaganti <punchagan@fossee.in>
parents: 343
diff changeset
   581
\end{lstlisting}
b44d7bcc6609 Added a few quiz questions; Minor edits.
Puneeth Chaganti <punchagan@fossee.in>
parents: 343
diff changeset
   582
\end{frame}
b44d7bcc6609 Added a few quiz questions; Minor edits.
Puneeth Chaganti <punchagan@fossee.in>
parents: 343
diff changeset
   583
b44d7bcc6609 Added a few quiz questions; Minor edits.
Puneeth Chaganti <punchagan@fossee.in>
parents: 343
diff changeset
   584
\begin{frame}[fragile]
b44d7bcc6609 Added a few quiz questions; Minor edits.
Puneeth Chaganti <punchagan@fossee.in>
parents: 343
diff changeset
   585
\frametitle{\incqno }
343
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   586
The following code snippet has an error/bug:
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   587
\begin{lstlisting}
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   588
In []: l = [0.1, 0.2, 0.3, 0.4]
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   589
In []: t = [0.69, 0.90, 1.19, 1.30]
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   590
In []: tsq = []
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   591
In []: for time in t:
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   592
 ....:     tsq.append(time*time)
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   593
 ....:     plot(l, tsq)
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   594
\end{lstlisting}
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   595
What is the error? How do you fix it?
adb85e126341 Moved all day1 quiz questions to end of day1-sessions.
Puneeth Chaganti <punchagan@fossee.in>
parents: 339
diff changeset
   596
\end{frame}