From a0ebad1a60e14508381e78de1e530906b165d807 Mon Sep 17 00:00:00 2001 From: Shantanu Choudhary Date: Wed, 18 Nov 2009 17:08:39 +0530 Subject: cheat sheet 1 Interactive Plotting. --- day1/cheatsheet1.tex | 97 ++++++++++++++++++++++++++++++++-------------------- day1/session1.tex | 14 ++------ 2 files changed, 63 insertions(+), 48 deletions(-) (limited to 'day1') diff --git a/day1/cheatsheet1.tex b/day1/cheatsheet1.tex index 42b46b1..4439a49 100755 --- a/day1/cheatsheet1.tex +++ b/day1/cheatsheet1.tex @@ -6,7 +6,8 @@ \usepackage{listings} \lstset{language=Python, basicstyle=\ttfamily, -commentstyle=\itshape\bfseries +commentstyle=\itshape\bfseries, +showstringspaces=false, } \newcommand{\typ}[1]{\lstinline{#1}} \usepackage[english]{babel} @@ -47,56 +48,78 @@ on title of figure use: Same way one can have TeX expression on xlabel, ylabel etc. \subsection{legends} -Apart from using \kwrd{loc='center'} for positioning the legend, one can also mention explicit co-ordinates for placement. +Apart from \kwrd{center}, some other \kwrd{loc} which can be specified are: +\begin{lstlisting} +'upper right' +'upper left' +'lower left' +'lower right' +'center left' +'center right' +'lower center' +'upper center' +\end{lstlisting} +\newpage +One can also mention explicit co-ordinates for placement of legend. \begin{lstlisting} In []: legend(['sin(2y)'], loc=(.8,.1)) \end{lstlisting} \typ{loc = 0, 1} (left top position of graph)\\ \typ{loc = 0.5, 0.5} (center of graph). -%\subsection{Multiple figures} - \subsection{Saving figures} One can save figure in any of these formats: png, pdf, ps, eps and svg. - \begin{lstlisting} -In [1]: x = linspace(0, 2*pi, 50) -In [2]: plot(x, sin(x)) -In [3]: xlabel('x') -In [4]: ylabel('sin(x)') -In [5]: title('Sinusoids') -In [6]: legend(['sin(y)']) -In [7]: legend(['sin(2y)'], loc = 'center') -# loc = 'upper right', 'upper left', 'lower left, 'lower right', 'center left', -# 'center right', 'lower center', 'upper center', 'best', 'right', 'center' - -In [8]: legend(['sin(2y)'], loc = (.8, .1)) - -In [9]: savefig('sin.png') # Save figure -In [10]: close() # Closes the figure - -In [11]: clf() # Clears the Plot area - -In [12]: plot(y, sin(y), 'g') -# Colors can be: 'b', 'g', 'r', 'c', 'm', 'y', 'k', 'w' - -In [13]: plot(y, cos(y), 'r', linewidth=2) -In [14]: legend(['x', '-x']) -In [15]: annotate('origin', xy=(0, 0)) +\subsection{Colors of plots} +\typ{In []: plot(y, sin(y), 'g')}\\ +Plots graph with green color. Other options available are: +\begin{lstlisting} + 'r' ---> Red + 'b' ---> Blue + 'r' ---> Red + 'c' ---> Cyan + 'm' ---> Magenta + 'y' ---> Yellow + 'k' ---> Black + 'w' ---> White +\end{lstlisting} -In [16]: xmin, xman = xlim() # Without arguments gets -In [17]: ymin, ymax = ylim() # values +\section{Saving and running scripts} +\begin{itemize} + \item \typ{\%hist}\\ + It returns the logs of all commands(including mistakes) used in IPython interpreter. + \item \typ{\%hist -n}\\ +It disables the line number representation of logs. + \item \typ{\%save four\_plot.py 16 18-27}\\ +For creating a script named four\_plot which includes line 16 and line 18 to 27 of logs. + \item \typ{\%run -i four\_plot.py}\\ +Running the python script inside IPython interpreter. +\end{itemize} -In [18]: xlim(0, 2 * pi) # With values, sets the -In [19]: ylim(ymin - 0.2, ymax + 0.2) # specified values +\section{Example} + \begin{lstlisting} +In []: x = linspace(0, 2*pi, 50) +In []: plot(x, sin(x), 'g') +In []: plot(x, cos(x), 'r', linewidth=2) +In []: xlabel('x') +In []: title('Sinusoidal Waves') +In []: legend(['sin(x)', 'cos(x)']) +In []: annotate('origin', xy=(0, 0)) +In []: xmin, xman = xlim() # Without arguments gets +In []: ymin, ymax = ylim() # values + +In []: xlim(0, 2 * pi) # With values, sets the +In []: ylim(ymin - 0.2, ymax + 0.2) # specified values + +In []: savefig('sin.png') # Save figure +In []: close() # Closes the figure \end{lstlisting} -\section{Saving and running scripts} +\section{References} \begin{itemize} - \item \typ{\%hist} - \item \typ{\%save four\_plot.py 16 18-27} - \item \typ{\%run -i four\_plot.py} + \item For documentation on IPython refer: \\ \url{http://ipython.scipy.org/moin/Documentation} + \item Plotting(matplotlib) related documentation are available at:\\ \url{http://matplotlib.sourceforge.net/contents.html} + \item Explore examples and plots based on matplotlib at \\ \url{http://matplotlib.sourceforge.net/examples/index.html} \end{itemize} - \end{document} diff --git a/day1/session1.tex b/day1/session1.tex index 26ec8e1..47051cc 100644 --- a/day1/session1.tex +++ b/day1/session1.tex @@ -335,20 +335,12 @@ In []: legend(['sin(2y)'], loc = 'center') \begin{columns} \column{0.6\textwidth} \includegraphics[height=2in, interpolate=true]{data/position} -\begin{lstlisting} -'best', 'right', 'center' -\end{lstlisting} \column{0.45\textwidth} \vspace{-0.2in} \begin{lstlisting} -'upper right' -'upper left' -'lower left' -'lower right' -'center left' -'center right' -'lower center' -'upper center' +'best' +'right' +'center' \end{lstlisting} \end{columns} \end{frame} -- cgit