diff options
Diffstat (limited to 'loading-data-from-files')
| -rw-r--r-- | loading-data-from-files/quickref.tex | 16 | ||||
| -rw-r--r-- | loading-data-from-files/slides.org | 67 | ||||
| -rw-r--r-- | loading-data-from-files/slides.tex | 149 |
3 files changed, 149 insertions, 83 deletions
diff --git a/loading-data-from-files/quickref.tex b/loading-data-from-files/quickref.tex index b26d168..c3bbe95 100644 --- a/loading-data-from-files/quickref.tex +++ b/loading-data-from-files/quickref.tex @@ -1,8 +1,12 @@ -Creating a linear array:\\ -{\ex \lstinline| x = linspace(0, 2*pi, 50)|} +\textbf{Loading data from files} + +\lstinline|loadtxt('filename')| returns the columns of file in one +sequence. + +\lstinline|x, y = loadtxt('filename', unpack=True)| to obtain a file +with 2 columns in separate sequences. + +\lstinline|loadtxt('filename', delimiter=';')|, if the file has +columns separated by ';' instead of spaces/tabs. -Plotting two variables:\\ -{\ex \lstinline| plot(x, sin(x))|} -Plotting two lists of equal length x, y:\\ -{\ex \lstinline| plot(x, y)|} diff --git a/loading-data-from-files/slides.org b/loading-data-from-files/slides.org new file mode 100644 index 0000000..91c188a --- /dev/null +++ b/loading-data-from-files/slides.org @@ -0,0 +1,67 @@ +#+LaTeX_CLASS: beamer +#+LaTeX_CLASS_OPTIONS: [presentation] +#+BEAMER_FRAME_LEVEL: 1 + +#+BEAMER_HEADER_EXTRA: \usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent} +#+COLUMNS: %45ITEM %10BEAMER_env(Env) %10BEAMER_envargs(Env Args) %4BEAMER_col(Col) %8BEAMER_extra(Extra) +#+PROPERTY: BEAMER_col_ALL 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 :ETC + +#+LaTeX_CLASS: beamer +#+LaTeX_CLASS_OPTIONS: [presentation] + +#+LaTeX_HEADER: \usepackage[english]{babel} \usepackage{ae,aecompl} +#+LaTeX_HEADER: \usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet} + +#+LaTeX_HEADER: \usepackage{listings} + +#+LaTeX_HEADER:\lstset{language=Python, basicstyle=\ttfamily\bfseries, +#+LaTeX_HEADER: commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen}, +#+LaTeX_HEADER: showstringspaces=false, keywordstyle=\color{blue}\bfseries} + +#+TITLE: Loading data from files +#+AUTHOR: FOSSEE +#+EMAIL: +#+DATE: + +#+DESCRIPTION: +#+KEYWORDS: +#+LANGUAGE: en +#+OPTIONS: H:3 num:nil toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t +#+OPTIONS: TeX:t LaTeX:nil skip:nil d:nil todo:nil pri:nil tags:not-in-toc + +* Outline + + Read data from files with a single column of data + + Read data from files with multiple columns +* Question 1 + Read the file ~pendulum_semicolon.txt~ which contains the same data + as ~pendulum.txt~, but the columns are separated by semi-colons + instead of spaces. Use the IPython help to see how to do this. +* Solution 1 + #+begin_src python + In []: L, T = loadtxt('/home/fossee/pendulum_semicolon.txt', unpack=True, delimiter=';') + + In []: print L + + In []: print T + #+end_src +* Summary + + Read data from files, containing a single column of data using the + ~loadtxt~ command. + + Read multiple columns of data, separated by spaces or other + delimiters. +* Thank you! +#+begin_latex + \begin{block}{} + \begin{center} + This spoken tutorial has been produced by the + \textcolor{blue}{FOSSEE} team, which is funded by the + \end{center} + \begin{center} + \textcolor{blue}{National Mission on Education through \\ + Information \& Communication Technology \\ + MHRD, Govt. of India}. + \end{center} + \end{block} +#+end_latex + + diff --git a/loading-data-from-files/slides.tex b/loading-data-from-files/slides.tex index df1462c..858d769 100644 --- a/loading-data-from-files/slides.tex +++ b/loading-data-from-files/slides.tex @@ -1,95 +1,90 @@ -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%Tutorial slides on Python. -% -% Author: FOSSEE -% Copyright (c) 2009, FOSSEE, IIT Bombay -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% - -\documentclass[14pt,compress]{beamer} -%\documentclass[draft]{beamer} -%\documentclass[compress,handout]{beamer} -%\usepackage{pgfpages} -%\pgfpagesuselayout{2 on 1}[a4paper,border shrink=5mm] - -% Modified from: generic-ornate-15min-45min.de.tex -\mode<presentation> -{ - \usetheme{Warsaw} - \useoutertheme{infolines} - \setbeamercovered{transparent} -} - -\usepackage[english]{babel} +% Created 2010-10-10 Sun 18:12 +\documentclass[presentation]{beamer} \usepackage[latin1]{inputenc} -%\usepackage{times} \usepackage[T1]{fontenc} - -\usepackage{ae,aecompl} -\usepackage{mathpazo,courier,euler} -\usepackage[scaled=.95]{helvet} - -\definecolor{darkgreen}{rgb}{0,0.5,0} - +\usepackage{fixltx2e} +\usepackage{graphicx} +\usepackage{longtable} +\usepackage{float} +\usepackage{wrapfig} +\usepackage{soul} +\usepackage{textcomp} +\usepackage{marvosym} +\usepackage{wasysym} +\usepackage{latexsym} +\usepackage{amssymb} +\usepackage{hyperref} +\tolerance=1000 +\usepackage[english]{babel} \usepackage{ae,aecompl} +\usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet} \usepackage{listings} -\lstset{language=Python, - basicstyle=\ttfamily\bfseries, - commentstyle=\color{red}\itshape, - stringstyle=\color{darkgreen}, - showstringspaces=false, - keywordstyle=\color{blue}\bfseries} - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -% Macros -\setbeamercolor{emphbar}{bg=blue!20, fg=black} -\newcommand{\emphbar}[1] -{\begin{beamercolorbox}[rounded=true]{emphbar} - {#1} - \end{beamercolorbox} -} -\newcounter{time} -\setcounter{time}{0} -\newcommand{\inctime}[1]{\addtocounter{time}{#1}{\tiny \thetime\ m}} - -\newcommand{\typ}[1]{\lstinline{#1}} - -\newcommand{\kwrd}[1]{ \texttt{\textbf{\color{blue}{#1}}} } - -% Title page -\title{Your Title Here} - -\author[FOSSEE] {FOSSEE} - -\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay} +\lstset{language=Python, basicstyle=\ttfamily\bfseries, +commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen}, +showstringspaces=false, keywordstyle=\color{blue}\bfseries} +\providecommand{\alert}[1]{\textbf{#1}} + +\title{Loading data from files} +\author{FOSSEE} \date{} -% DOCUMENT STARTS +\usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent} \begin{document} +\maketitle + + + + + + + + + \begin{frame} - \maketitle +\frametitle{Outline} +\label{sec-1} + +\begin{itemize} +\item Read data from files with a single column of data +\item Read data from files with multiple columns +\end{itemize} \end{frame} +\begin{frame} +\frametitle{Question 1} +\label{sec-2} -\begin{frame}[fragile] - \frametitle{Outline} - \begin{itemize} - \item - \end{itemize} + Read the file \texttt{pendulum\_semicolon.txt} which contains the same data + as \texttt{pendulum.txt}, but the columns are separated by semi-colons + instead of spaces. Use the IPython help to see how to do this. \end{frame} +\begin{frame}[fragile] +\frametitle{Solution 1} +\label{sec-3} -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% All other slides here. %% -%% The same slides will be used in a classroom setting. %% -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +\lstset{language=Python} +\begin{lstlisting} +In []: L, T = loadtxt('/home/fossee/pendulum_semicolon.txt', unpack=True, delimiter=';') -\begin{frame}[fragile] - \frametitle{Summary} - \begin{itemize} - \item - \end{itemize} -\end{frame} +In []: print L +In []: print T +\end{lstlisting} +\end{frame} \begin{frame} - \frametitle{Thank you!} +\frametitle{Summary} +\label{sec-4} + +\begin{itemize} +\item Read data from files, containing a single column of data using the + \texttt{loadtxt} command. +\item Read multiple columns of data, separated by spaces or other + delimiters. +\end{itemize} +\end{frame} +\begin{frame} +\frametitle{Thank you!} +\label{sec-5} + \begin{block}{} \begin{center} This spoken tutorial has been produced by the |