<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>pylab_examples example code: line_collection2.py — Matplotlib v1.1.1 documentation</title> <link rel="stylesheet" href="../../_static/mpl.css" type="text/css" /> <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '../../', VERSION: '1.1.1', COLLAPSE_INDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </script> <script type="text/javascript" src="../../_static/jquery.js"></script> <script type="text/javascript" src="../../_static/underscore.js"></script> <script type="text/javascript" src="../../_static/doctools.js"></script> <link rel="search" type="application/opensearchdescription+xml" title="Search within Matplotlib v1.1.1 documentation" href="../../_static/opensearch.xml"/> <link rel="top" title="Matplotlib v1.1.1 documentation" href="../../index.html" /> </head> <body> <!-- Piwik --> <script type="text/javascript"> if ("matplotlib.sourceforge.net" == document.location.hostname || "matplotlib.sf.net" == document.location.hostname) { var pkBaseURL = (("https:" == document.location.protocol) ? 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Here is a</span> <span class="c"># simple example showing how it is done.</span> <span class="n">N</span> <span class="o">=</span> <span class="mi">50</span> <span class="n">x</span> <span class="o">=</span> <span class="n">arange</span><span class="p">(</span><span class="n">N</span><span class="p">)</span> <span class="c"># Here are many sets of y to plot vs x</span> <span class="n">ys</span> <span class="o">=</span> <span class="p">[</span><span class="n">x</span><span class="o">+</span><span class="n">i</span> <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="n">x</span><span class="p">]</span> <span class="c"># We need to set the plot limits, they will not autoscale</span> <span class="n">ax</span> <span class="o">=</span> <span class="n">axes</span><span class="p">()</span> <span class="n">ax</span><span class="o">.</span><span class="n">set_xlim</span><span class="p">((</span><span class="n">amin</span><span class="p">(</span><span class="n">x</span><span class="p">),</span><span class="n">amax</span><span class="p">(</span><span class="n">x</span><span class="p">)))</span> <span class="n">ax</span><span class="o">.</span><span class="n">set_ylim</span><span class="p">((</span><span class="n">amin</span><span class="p">(</span><span class="n">amin</span><span class="p">(</span><span class="n">ys</span><span class="p">)),</span><span class="n">amax</span><span class="p">(</span><span class="n">amax</span><span class="p">(</span><span class="n">ys</span><span class="p">))))</span> <span class="c"># colors is sequence of rgba tuples</span> <span class="c"># linestyle is a string or dash tuple. Legal string values are</span> <span class="c"># solid|dashed|dashdot|dotted. The dash tuple is (offset, onoffseq)</span> <span class="c"># where onoffseq is an even length tuple of on and off ink in points.</span> <span class="c"># If linestyle is omitted, 'solid' is used</span> <span class="c"># See matplotlib.collections.LineCollection for more information</span> <span class="n">line_segments</span> <span class="o">=</span> <span class="n">LineCollection</span><span class="p">([</span><span class="nb">zip</span><span class="p">(</span><span class="n">x</span><span class="p">,</span><span class="n">y</span><span class="p">)</span> <span class="k">for</span> <span class="n">y</span> <span class="ow">in</span> <span class="n">ys</span><span class="p">],</span> <span class="c"># Make a sequence of x,y pairs</span> <span class="n">linewidths</span> <span class="o">=</span> <span class="p">(</span><span class="mf">0.5</span><span class="p">,</span><span class="mi">1</span><span class="p">,</span><span class="mf">1.5</span><span class="p">,</span><span class="mi">2</span><span class="p">),</span> <span class="n">linestyles</span> <span class="o">=</span> <span class="s">'solid'</span><span class="p">)</span> <span class="n">line_segments</span><span class="o">.</span><span class="n">set_array</span><span class="p">(</span><span class="n">x</span><span class="p">)</span> <span class="n">ax</span><span class="o">.</span><span class="n">add_collection</span><span class="p">(</span><span class="n">line_segments</span><span class="p">)</span> <span class="n">fig</span> <span class="o">=</span> <span class="n">gcf</span><span class="p">()</span> <span class="n">axcb</span> <span class="o">=</span> <span class="n">fig</span><span class="o">.</span><span class="n">colorbar</span><span class="p">(</span><span class="n">line_segments</span><span class="p">)</span> <span class="n">axcb</span><span class="o">.</span><span class="n">set_label</span><span class="p">(</span><span class="s">'Line Number'</span><span class="p">)</span> <span class="n">ax</span><span class="o">.</span><span class="n">set_title</span><span class="p">(</span><span class="s">'Line Collection with mapped colors'</span><span class="p">)</span> <span class="n">sci</span><span class="p">(</span><span class="n">line_segments</span><span class="p">)</span> <span class="c"># This allows interactive changing of the colormap.</span> <span class="n">show</span><span class="p">()</span> </pre></div> </div> <p>Keywords: python, matplotlib, pylab, example, codex (see <a class="reference internal" href="../../faq/howto_faq.html#how-to-search-examples"><em>Search examples</em></a>)</p> </div> </div> </div> </div> <div class="clearer"></div> </div> <div class="related"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../../genindex.html" title="General Index" >index</a></li> <li class="right" > <a href="../../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li><a href="../../index.html">home</a>| </li> <li><a href="../../search.html">search</a>| </li> <li><a href="../index.html">examples</a>| </li> <li><a href="../../gallery.html">gallery</a>| </li> <li><a href="../../contents.html">docs</a> »</li> </ul> </div> <div class="footer"> © Copyright 2008, John Hunter, Darren Dale, Michael Droettboom. 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