author | Prabhu Ramachandran <prabhu@aero.iitb.ac.in> |
Mon, 28 Jun 2010 00:14:02 -0500 (2010-06-28) | |
branch | scipy2010 |
changeset 426 | 7d8738ce004d |
parent 408 | 217c38c06ebd |
child 441 | 9d9e4026238f |
permissions | -rw-r--r-- |
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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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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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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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||
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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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|
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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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Adding an acknowledgement slide to session 1. Minor changes to session
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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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|
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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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|
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\section{Lists} |
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\begin{frame}[fragile] |
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191 |
\frametitle{Lists: Introduction} |
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\begin{lstlisting} |
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193 |
In []: time = [0, 1, 2, 3] |
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194 |
|
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195 |
In []: distance = [7, 11, 15, 19] |
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196 |
|
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197 |
\end{lstlisting} |
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198 |
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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203 |
|
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204 |
\begin{frame}[fragile] |
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205 |
\frametitle{Lists: Initializing \& accessing elements} |
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206 |
\begin{lstlisting} |
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In []: mtlist = [] |
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208 |
\end{lstlisting} |
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209 |
\emphbar{Empty List} |
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210 |
\begin{lstlisting} |
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In []: p = [ 2, 3, 5, 7] |
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212 |
|
379
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213 |
In []: p[1] |
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214 |
Out[]: 3 |
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|
215 |
|
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In []: p[0]+p[1]+p[-1] |
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217 |
Out[]: 12 |
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\end{lstlisting} |
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\end{frame} |
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|
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\begin{frame}[fragile] |
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\frametitle{List: Slicing} |
188 | 223 |
\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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|
228 |
Out[]: [3, 5] |
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229 |
\end{lstlisting} |
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230 |
\emphbar{A slice} |
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231 |
\begin{lstlisting} |
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232 |
In []: p[0:-1] |
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233 |
Out[]: [2, 3, 5] |
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234 |
In []: p[::2] |
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Out[]: [2, 5] |
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236 |
\end{lstlisting} |
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237 |
\alert{\typ{list[initial:final:step]}} |
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\end{frame} |
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239 |
|
408
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240 |
\begin{frame}[fragile] |
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241 |
\frametitle{List: Slicing} |
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242 |
What is the output of the following? |
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243 |
\begin{lstlisting} |
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244 |
In []: p[1::2] |
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245 |
|
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246 |
In []: p[1:-1:2] |
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247 |
\end{lstlisting} |
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248 |
\end{frame} |
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249 |
|
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250 |
|
263
8a4a1e5aec85
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251 |
%% more on list slicing |
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252 |
\begin{frame}[fragile] |
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253 |
\frametitle{List operations} |
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\begin{lstlisting} |
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255 |
In []: b = [ 11, 13, 17] |
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256 |
In []: c = p + b |
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257 |
|
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258 |
In []: c |
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259 |
Out[]: [2, 3, 5, 7, 11, 13, 17] |
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260 |
|
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261 |
In []: p.append(11) |
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262 |
In []: p |
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263 |
Out[]: [ 2, 3, 5, 7, 11] |
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264 |
\end{lstlisting} |
408
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265 |
Question: Does \typ{c} change now that \typ{p} is changed? |
179
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266 |
%\inctime{10} |
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267 |
\end{frame} |
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268 |
|
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269 |
\section{Simple Pendulum} |
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270 |
\begin{frame}[fragile] |
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271 |
\frametitle{Simple Pendulum - L and T} |
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272 |
Let us look at the Simple Pendulum experiment. |
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273 |
\begin{center} |
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274 |
\begin{small} |
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275 |
\begin{tabular}{| c | c | c |} |
193
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|
276 |
\hline |
213
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277 |
$L$ & $T$ & $T^2$ \\ \hline |
301
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278 |
0.1 & 0.69 & \\ \hline |
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|
279 |
0.2 & 0.90 & \\ \hline |
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|
280 |
0.3 & 1.19 & \\ \hline |
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Updated session 2 slides of day 1 and added cheatsheets of day 2.
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|
281 |
0.4 & 1.30 & \\ \hline |
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|
282 |
0.5 & 1.47 & \\ \hline |
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Updated session 2 slides of day 1 and added cheatsheets of day 2.
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|
283 |
0.6 & 1.58 & \\ \hline |
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284 |
0.7 & 1.77 & \\ \hline |
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|
285 |
0.8 & 1.83 & \\ \hline |
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|
286 |
0.9 & 1.94 & \\ \hline |
193
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287 |
\end{tabular} |
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Revamped session 2 slides.
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|
288 |
\end{small}\\ |
211
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Minor edits to session2.
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|
289 |
\alert{$L \alpha T^2$} |
193
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290 |
\end{center} |
153
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|
291 |
\end{frame} |
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Minor edits to day2 session2.
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|
292 |
|
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Minor edits to day2 session2.
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|
293 |
\begin{frame}[fragile] |
193
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|
294 |
\frametitle{Lets use lists} |
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Revamped session 2 slides.
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|
295 |
\begin{lstlisting} |
381
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Updated changes from GRDCS.
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|
296 |
In []: L = [0.1, 0.2, 0.3, 0.4, 0.5, |
253
e446ed7287d7
Updated session 2 and session 4 slides of day 1.
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|
297 |
0.6, 0.7, 0.8, 0.9] |
193
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Revamped session 2 slides.
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changeset
|
298 |
|
301
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Updated session 2 slides of day 1 and added cheatsheets of day 2.
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|
299 |
In []: t = [0.69, 0.90, 1.19, |
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Updated session 2 slides of day 1 and added cheatsheets of day 2.
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|
300 |
1.30, 1.47, 1.58, |
49bdffe4dca5
Updated session 2 slides of day 1 and added cheatsheets of day 2.
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diff
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|
301 |
1.77, 1.83, 1.94] |
193
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|
302 |
\end{lstlisting} |
408
217c38c06ebd
ENH: Minor changes to session 2.
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diff
changeset
|
303 |
\alert{Gotcha}: Make sure \typ{L} and \typ{t} have the same number |
217c38c06ebd
ENH: Minor changes to session 2.
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parents:
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changeset
|
304 |
of elements |
217c38c06ebd
ENH: Minor changes to session 2.
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parents:
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changeset
|
305 |
|
217c38c06ebd
ENH: Minor changes to session 2.
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diff
changeset
|
306 |
\begin{lstlisting} |
217c38c06ebd
ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents:
397
diff
changeset
|
307 |
In []: print len(L), len(t) |
217c38c06ebd
ENH: Minor changes to session 2.
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parents:
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diff
changeset
|
308 |
\end{lstlisting} |
217c38c06ebd
ENH: Minor changes to session 2.
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parents:
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diff
changeset
|
309 |
|
193
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Revamped session 2 slides.
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changeset
|
310 |
\end{frame} |
a31b0e76c0fb
Revamped session 2 slides.
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diff
changeset
|
311 |
|
a31b0e76c0fb
Revamped session 2 slides.
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diff
changeset
|
312 |
\begin{frame}[fragile] |
a31b0e76c0fb
Revamped session 2 slides.
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changeset
|
313 |
\frametitle{Plotting $L$ vs $T^2$} |
156
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Added plotting of points, additional attributes of plots.
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|
314 |
\begin{itemize} |
290
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Changed the schedule in session 1 slides and updated session 2 slides.
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286
diff
changeset
|
315 |
\item We must square each of the values in \typ{t} |
408
217c38c06ebd
ENH: Minor changes to session 2.
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parents:
397
diff
changeset
|
316 |
\item How do we do it? |
290
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Changed the schedule in session 1 slides and updated session 2 slides.
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diff
changeset
|
317 |
\item We use a \kwrd{for} loop to iterate over \typ{t} |
156
6a1388c456f4
Added plotting of points, additional attributes of plots.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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diff
changeset
|
318 |
\end{itemize} |
6a1388c456f4
Added plotting of points, additional attributes of plots.
Puneeth Chaganti <punchagan@fossee.in>
parents:
153
diff
changeset
|
319 |
\end{frame} |
153
dc0da25b788b
Minor edits to day2 session2.
Puneeth Chaganti <punchagan@fossee.in>
parents:
151
diff
changeset
|
320 |
|
159
01f57cda252f
Manual merge of conflicting branches.
Santosh G. Vattam <vattam.santosh@gmail.com>
diff
changeset
|
321 |
\begin{frame}[fragile] |
01f57cda252f
Manual merge of conflicting branches.
Santosh G. Vattam <vattam.santosh@gmail.com>
diff
changeset
|
322 |
\frametitle{Plotting $L$ vs $T^2$} |
158
978108b0c02c
Added lists and for slides to session 2, day 1.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
153
diff
changeset
|
323 |
\begin{lstlisting} |
290
10528e3073ef
Changed the schedule in session 1 slides and updated session 2 slides.
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parents:
286
diff
changeset
|
324 |
In []: tsq = [] |
153
dc0da25b788b
Minor edits to day2 session2.
Puneeth Chaganti <punchagan@fossee.in>
parents:
151
diff
changeset
|
325 |
|
290
10528e3073ef
Changed the schedule in session 1 slides and updated session 2 slides.
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parents:
286
diff
changeset
|
326 |
In []: for time in t: |
10528e3073ef
Changed the schedule in session 1 slides and updated session 2 slides.
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parents:
286
diff
changeset
|
327 |
....: tsq.append(time*time) |
352
b44d7bcc6609
Added a few quiz questions; Minor edits.
Puneeth Chaganti <punchagan@fossee.in>
parents:
343
diff
changeset
|
328 |
....: |
b44d7bcc6609
Added a few quiz questions; Minor edits.
Puneeth Chaganti <punchagan@fossee.in>
parents:
343
diff
changeset
|
329 |
....: |
158
978108b0c02c
Added lists and for slides to session 2, day 1.
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parents:
153
diff
changeset
|
330 |
|
978108b0c02c
Added lists and for slides to session 2, day 1.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
153
diff
changeset
|
331 |
\end{lstlisting} |
408
217c38c06ebd
ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents:
397
diff
changeset
|
332 |
This gives \typ{tsq} which is the list of squares of \typ{t} values. |
381
b797cd67982b
Updated changes from GRDCS.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
379
diff
changeset
|
333 |
\begin{lstlisting} |
b797cd67982b
Updated changes from GRDCS.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
379
diff
changeset
|
334 |
In []: print len(L), len(t), len(tsq) |
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Updated changes from GRDCS.
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335 |
Out[]: 9 9 9 |
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|
336 |
\end{lstlisting} |
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337 |
\end{frame} |
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338 |
|
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339 |
\begin{frame}[fragile] |
408
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|
340 |
\frametitle{How do you exit the \texttt{for} loop?} |
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Commits from NIT DGP and IITK
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|
341 |
Hitting the ``ENTER'' key twice returns the cursor to the previous indentation level |
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342 |
\begin{lstlisting} |
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|
343 |
In []: for time in t: |
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344 |
....: tsq.append(time*time) |
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345 |
....: |
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346 |
....: |
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347 |
|
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348 |
In []: plot(L, tsq) |
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349 |
\end{lstlisting} |
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350 |
\end{frame} |
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351 |
|
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352 |
\begin{frame}[fragile] |
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353 |
\begin{figure} |
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354 |
\includegraphics[width=3.5in]{data/L-TSq-limited.png} |
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355 |
\end{figure} |
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356 |
\end{frame} |
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357 |
|
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358 |
\begin{frame}[fragile] |
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359 |
\frametitle{What about larger data sets?} |
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360 |
\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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362 |
\begin{lstlisting} |
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|
363 |
In []: cat pendulum.txt |
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364 |
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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367 |
1.3000e-01 7.5360e-01 |
319
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368 |
\end{lstlisting} %$ |
193
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369 |
\ldots |
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|
370 |
\end{frame} |
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|
371 |
|
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|
372 |
\begin{frame}[fragile] |
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373 |
\frametitle{Reading \typ{pendulum.txt}} |
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|
374 |
\begin{itemize} |
408
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|
375 |
\item File contains L vs.\ T values |
379
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|
376 |
\item First Column - L values |
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|
377 |
\item Second Column - T values |
274
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|
378 |
\item Let us generate a plot from the data file |
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|
379 |
\end{itemize} |
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|
380 |
\end{frame} |
109
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|
381 |
|
161
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|
382 |
\begin{frame}[fragile] |
408
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|
383 |
\frametitle{Gotcha and an aside} |
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|
384 |
Ensure you are in the same directory as \typ{pendulum.txt}\\ |
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|
385 |
if not, do the following on IPython: |
217c38c06ebd
ENH: Minor changes to session 2.
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parents:
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|
386 |
\begin{lstlisting} |
217c38c06ebd
ENH: Minor changes to session 2.
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parents:
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|
387 |
In []: %cd directory_containing_file |
217c38c06ebd
ENH: Minor changes to session 2.
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parents:
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|
388 |
# Check if pendulum.txt is there. |
217c38c06ebd
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parents:
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|
389 |
In []: ls |
217c38c06ebd
ENH: Minor changes to session 2.
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parents:
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|
390 |
# Also try |
217c38c06ebd
ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents:
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|
391 |
In []: !ls |
217c38c06ebd
ENH: Minor changes to session 2.
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|
392 |
\end{lstlisting} |
217c38c06ebd
ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents:
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diff
changeset
|
393 |
|
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ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents:
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|
394 |
\alert{Note:} \typ{\%cd} is an IPython magic command. For more information |
217c38c06ebd
ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents:
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changeset
|
395 |
do: |
217c38c06ebd
ENH: Minor changes to session 2.
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parents:
397
diff
changeset
|
396 |
\begin{lstlisting} |
217c38c06ebd
ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
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.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents:
397
diff
changeset
|
399 |
\end{frame} |
217c38c06ebd
ENH: Minor changes to session 2.
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parents:
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diff
changeset
|
400 |
|
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parents:
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diff
changeset
|
401 |
|
217c38c06ebd
ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
parents:
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diff
changeset
|
402 |
\begin{frame}[fragile] |
290
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changeset
|
403 |
\frametitle{Plotting from \typ{pendulum.txt}} |
408
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parents:
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diff
changeset
|
404 |
Open a new script and save as \typ{pendulum_plot.py} |
161
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Adding reading files and plotting to day1 session1.
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changeset
|
405 |
\begin{lstlisting} |
381
b797cd67982b
Updated changes from GRDCS.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
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changeset
|
406 |
L = [] |
290
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changeset
|
407 |
t = [] |
10528e3073ef
Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
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changeset
|
408 |
for line in open('pendulum.txt'): |
301
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Updated session 2 slides of day 1 and added cheatsheets of day 2.
Santosh G. Vattam <vattam.santosh@gmail.com>
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|
409 |
point = line.split() |
381
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Updated changes from GRDCS.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
379
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changeset
|
410 |
L.append(float(point[0])) |
301
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Updated session 2 slides of day 1 and added cheatsheets of day 2.
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|
411 |
t.append(float(point[1])) |
290
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changeset
|
412 |
tsq = [] |
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Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
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changeset
|
413 |
for time in t: |
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Santosh G. Vattam <vattam.santosh@gmail.com>
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changeset
|
414 |
tsq.append(time*time) |
381
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Updated changes from GRDCS.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
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diff
changeset
|
415 |
plot(L, tsq, '.') |
109
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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
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diff
changeset
|
419 |
\begin{frame} |
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Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
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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:
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diff
changeset
|
421 |
\begin{itemize} |
408
217c38c06ebd
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parents:
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diff
changeset
|
422 |
\item Save as \typ{pendulum\_plot.py} |
290
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changeset
|
423 |
\item Run using \kwrd{\%run -i pendulum\_plot.py} |
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Changed the schedule in session 1 slides and updated session 2 slides.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
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changeset
|
424 |
\end{itemize} |
161
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Adding reading files and plotting to day1 session1.
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parents:
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changeset
|
425 |
\end{frame} |
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Adding reading files and plotting to day1 session1.
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changeset
|
426 |
|
ff22fae4fde5
Adding reading files and plotting to day1 session1.
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diff
changeset
|
427 |
\begin{frame}[fragile] |
198
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Updated session 2 slides and added 4 graphs to data directory.
Santosh G. Vattam <vattam.santosh@gmail.com>
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changeset
|
428 |
\begin{figure} |
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Updated session 2 slides and added 4 graphs to data directory.
Santosh G. Vattam <vattam.santosh@gmail.com>
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195
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changeset
|
429 |
\includegraphics[width=3.5in]{data/L-Tsq.png} |
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Updated session 2 slides and added 4 graphs to data directory.
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parents:
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changeset
|
430 |
\end{figure} |
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Updated session 2 slides and added 4 graphs to data directory.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
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changeset
|
431 |
\end{frame} |
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Updated session 2 slides and added 4 graphs to data directory.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
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diff
changeset
|
432 |
|
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Updated session 2 slides and added 4 graphs to data directory.
Santosh G. Vattam <vattam.santosh@gmail.com>
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changeset
|
433 |
\begin{frame}[fragile] |
161
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|
434 |
\frametitle{Reading files \ldots} |
290
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changeset
|
435 |
\typ{for line in open('pendulum.txt'):} |
161
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changeset
|
436 |
\begin{itemize} |
274
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changeset
|
437 |
\item opening file `\typ{pendulum.txt}' |
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|
438 |
\item reading the file line by line |
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changeset
|
439 |
\item \typ{line} is a \kwrd{string} |
161
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changeset
|
440 |
\end{itemize} |
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|
441 |
\end{frame} |
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|
442 |
|
193
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|
443 |
\section{Strings} |
408
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|
444 |
|
161
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445 |
\begin{frame}[fragile] |
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|
446 |
\frametitle{Strings} |
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|
447 |
Anything within ``quotes'' is a string! |
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|
448 |
\begin{lstlisting} |
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449 |
' This is a string ' |
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|
450 |
" This too! " |
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|
451 |
""" This one too! """ |
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|
452 |
''' And one more! ''' |
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|
453 |
\end{lstlisting} |
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|
454 |
\end{frame} |
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|
455 |
|
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|
456 |
\begin{frame}[fragile] |
408
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|
457 |
\frametitle{Strings} |
217c38c06ebd
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changeset
|
458 |
Why so many? |
217c38c06ebd
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|
459 |
\begin{lstlisting} |
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|
460 |
' "Do or do not. No try." said Yoda.' |
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|
461 |
" ' is a mighty lonely quote." |
217c38c06ebd
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changeset
|
462 |
\end{lstlisting} |
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|
463 |
The triple quoted ones can span multiple lines! |
217c38c06ebd
ENH: Minor changes to session 2.
Prabhu Ramachandran <prabhu@aero.iitb.ac.in>
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changeset
|
464 |
|
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diff
changeset
|
465 |
\begin{lstlisting} |
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|
466 |
""" The quick brown |
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diff
changeset
|
467 |
fox jumped over |
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|
468 |
the lazy dingbat. |
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changeset
|
469 |
""" |
217c38c06ebd
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changeset
|
470 |
\end{lstlisting} |
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parents:
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|
471 |
\end{frame} |
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parents:
397
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changeset
|
472 |
|
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ENH: Minor changes to session 2.
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changeset
|
473 |
\begin{frame}[fragile] |
161
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|
474 |
\frametitle{Strings and \typ{split()}} |
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parents:
diff
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|
475 |
\begin{lstlisting} |
274
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|
476 |
In []: greet = 'hello world' |
109
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Santosh G. Vattam <vattam.santosh@gmail.com>
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|
477 |
|
274
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|
478 |
In []: greet.split() |
130
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Minor edits to day1 session2.
Puneeth Chaganti <punchagan@fossee.in>
parents:
118
diff
changeset
|
479 |
Out[]: ['hello', 'world'] |
109
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changeset
|
480 |
\end{lstlisting} |
161
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changeset
|
481 |
This is what happens with \typ{line} |
109
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Added session2.tex.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
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|
482 |
\begin{lstlisting} |
330
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Shantanu <shantanu@fossee.in>
parents:
319
diff
changeset
|
483 |
In []: line = '1.20 7.42' |
109
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parents:
diff
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|
484 |
|
301
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Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
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diff
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|
485 |
In []: point = line.split() |
49bdffe4dca5
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parents:
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diff
changeset
|
486 |
|
49bdffe4dca5
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parents:
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diff
changeset
|
487 |
In []: point |
330
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|
488 |
Out[]: ['1.20', '7.42'] |
109
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parents:
diff
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|
489 |
\end{lstlisting} |
16e04782baac
Added session2.tex.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
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changeset
|
490 |
\end{frame} |
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Added session2.tex.
Santosh G. Vattam <vattam.santosh@gmail.com>
parents:
diff
changeset
|
491 |
|
161
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changeset
|
492 |
\begin{frame}[fragile] |
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Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
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changeset
|
493 |
\frametitle{Getting floats from strings} |
ff22fae4fde5
Adding reading files and plotting to day1 session1.
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parents:
160
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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
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Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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diff
changeset
|
496 |
Out[]: <type 'str'> |
ff22fae4fde5
Adding reading files and plotting to day1 session1.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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changeset
|
497 |
\end{lstlisting} |
ff22fae4fde5
Adding reading files and plotting to day1 session1.
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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
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Adding reading files and plotting to day1 session1.
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parents:
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diff
changeset
|
501 |
|
ff22fae4fde5
Adding reading files and plotting to day1 session1.
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parents:
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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.
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parents:
253
diff
changeset
|
507 |
\begin{frame}[fragile] |
34f71bdd0263
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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
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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.
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parents:
253
diff
changeset
|
524 |
\begin{figure} |
34f71bdd0263
Loads of changes done.
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parents:
253
diff
changeset
|
525 |
\includegraphics[width=3.5in]{data/L-Tsq.png} |
34f71bdd0263
Loads of changes done.
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parents:
253
diff
changeset
|
526 |
\end{figure} |
34f71bdd0263
Loads of changes done.
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parents:
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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
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diff
changeset
|
530 |
\begin{frame}[fragile] |
34f71bdd0263
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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
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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
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Puneeth Chaganti <punchagan@fossee.in>
parents:
339
diff
changeset
|
551 |
In []: a[0:-1] |
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|
552 |
\end{lstlisting} |
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|
553 |
What is the output? |
adb85e126341
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changeset
|
554 |
\end{frame} |
adb85e126341
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changeset
|
555 |
|
adb85e126341
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changeset
|
556 |
\begin{frame} |
adb85e126341
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changeset
|
557 |
\frametitle{\incqno } |
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changeset
|
558 |
How do you combine two lists \emph{a} and \emph{b} to produce one list? |
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changeset
|
559 |
\end{frame} |
adb85e126341
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changeset
|
560 |
|
adb85e126341
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changeset
|
561 |
\begin{frame}[fragile] |
adb85e126341
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changeset
|
562 |
\frametitle{\incqno } |
adb85e126341
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changeset
|
563 |
\begin{lstlisting} |
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changeset
|
564 |
In []: a = [1, 2, 5, 9] |
adb85e126341
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changeset
|
565 |
\end{lstlisting} |
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changeset
|
566 |
How do you add the value 10 to the end of this list? |
adb85e126341
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changeset
|
567 |
\end{frame} |
adb85e126341
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diff
changeset
|
568 |
|
adb85e126341
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diff
changeset
|
569 |
\begin{frame} |
adb85e126341
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parents:
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changeset
|
570 |
\frametitle{\incqno } |
adb85e126341
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changeset
|
571 |
Write the code to read a file \texttt{data.txt} and print each line of it? |
adb85e126341
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diff
changeset
|
572 |
\end{frame} |
adb85e126341
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diff
changeset
|
573 |
|
adb85e126341
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diff
changeset
|
574 |
\begin{frame}[fragile] |
adb85e126341
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parents:
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changeset
|
575 |
\frametitle{\incqno } |
352
b44d7bcc6609
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Puneeth Chaganti <punchagan@fossee.in>
parents:
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diff
changeset
|
576 |
What would be the result of the following code snippet: |
b44d7bcc6609
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Puneeth Chaganti <punchagan@fossee.in>
parents:
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diff
changeset
|
577 |
\begin{lstlisting} |
b44d7bcc6609
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changeset
|
578 |
In []: x = linspace(0, 10, 50) |
b44d7bcc6609
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Puneeth Chaganti <punchagan@fossee.in>
parents:
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changeset
|
579 |
In []: y = linspace(50, 100, 100) |
b44d7bcc6609
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Puneeth Chaganti <punchagan@fossee.in>
parents:
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changeset
|
580 |
In []: plot(x, y) |
b44d7bcc6609
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Puneeth Chaganti <punchagan@fossee.in>
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diff
changeset
|
581 |
\end{lstlisting} |
b44d7bcc6609
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Puneeth Chaganti <punchagan@fossee.in>
parents:
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diff
changeset
|
582 |
\end{frame} |
b44d7bcc6609
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Puneeth Chaganti <punchagan@fossee.in>
parents:
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diff
changeset
|
583 |
|
b44d7bcc6609
Added a few quiz questions; Minor edits.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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diff
changeset
|
584 |
\begin{frame}[fragile] |
b44d7bcc6609
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Puneeth Chaganti <punchagan@fossee.in>
parents:
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diff
changeset
|
585 |
\frametitle{\incqno } |
343
adb85e126341
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parents:
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diff
changeset
|
586 |
The following code snippet has an error/bug: |
adb85e126341
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parents:
339
diff
changeset
|
587 |
\begin{lstlisting} |
adb85e126341
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parents:
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diff
changeset
|
588 |
In []: l = [0.1, 0.2, 0.3, 0.4] |
adb85e126341
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Puneeth Chaganti <punchagan@fossee.in>
parents:
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diff
changeset
|
589 |
In []: t = [0.69, 0.90, 1.19, 1.30] |
adb85e126341
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parents:
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diff
changeset
|
590 |
In []: tsq = [] |
adb85e126341
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diff
changeset
|
591 |
In []: for time in t: |
adb85e126341
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diff
changeset
|
592 |
....: tsq.append(time*time) |
adb85e126341
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parents:
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diff
changeset
|
593 |
....: plot(l, tsq) |
adb85e126341
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parents:
339
diff
changeset
|
594 |
\end{lstlisting} |
adb85e126341
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parents:
339
diff
changeset
|
595 |
What is the error? How do you fix it? |
adb85e126341
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parents:
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diff
changeset
|
596 |
\end{frame} |