<!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>misc example code: rec_join_demo.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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<h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../../genindex.html" title="General Index" accesskey="I">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="sphinxsidebar"> <div class="sphinxsidebarwrapper"> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="../../_sources/examples/misc/rec_join_demo.txt" rel="nofollow">Show Source</a></li> </ul> <div id="searchbox" style="display: none"> <h3>Quick search</h3> <form class="search" action="../../search.html" method="get"> <input type="text" name="q" size="18" /> <input type="submit" value="Go" /> <input type="hidden" name="check_keywords" value="yes" /> <input 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class="kn">import</span> <span class="nn">matplotlib.cbook</span> <span class="kn">as</span> <span class="nn">cbook</span> <span class="n">datafile</span> <span class="o">=</span> <span class="n">cbook</span><span class="o">.</span><span class="n">get_sample_data</span><span class="p">(</span><span class="s">'aapl.csv'</span><span class="p">,</span> <span class="n">asfileobj</span><span class="o">=</span><span class="bp">False</span><span class="p">)</span> <span class="k">print</span> <span class="s">'loading'</span><span class="p">,</span> <span class="n">datafile</span> <span class="n">r</span> <span class="o">=</span> <span class="n">mlab</span><span class="o">.</span><span class="n">csv2rec</span><span class="p">(</span><span class="n">datafile</span><span class="p">)</span> <span class="n">r</span><span class="o">.</span><span class="n">sort</span><span class="p">()</span> <span class="n">r1</span> <span class="o">=</span> <span class="n">r</span><span class="p">[</span><span class="o">-</span><span class="mi">10</span><span class="p">:]</span> <span class="c"># Create a new array</span> <span class="n">r2</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">empty</span><span class="p">(</span><span class="mi">12</span><span class="p">,</span> <span class="n">dtype</span><span class="o">=</span><span class="p">[(</span><span class="s">'date'</span><span class="p">,</span> <span class="s">'|O4'</span><span class="p">),</span> <span class="p">(</span><span class="s">'high'</span><span class="p">,</span> <span class="n">np</span><span class="o">.</span><span class="n">float</span><span class="p">),</span> <span class="p">(</span><span class="s">'marker'</span><span class="p">,</span> <span class="n">np</span><span class="o">.</span><span class="n">float</span><span class="p">)])</span> <span class="n">r2</span> <span class="o">=</span> <span class="n">r2</span><span class="o">.</span><span class="n">view</span><span class="p">(</span><span class="n">np</span><span class="o">.</span><span class="n">recarray</span><span class="p">)</span> <span class="n">r2</span><span class="o">.</span><span class="n">date</span> <span class="o">=</span> <span class="n">r</span><span class="o">.</span><span class="n">date</span><span class="p">[</span><span class="o">-</span><span class="mi">17</span><span class="p">:</span><span class="o">-</span><span class="mi">5</span><span class="p">]</span> <span class="n">r2</span><span class="o">.</span><span class="n">high</span> <span class="o">=</span> <span class="n">r</span><span class="o">.</span><span class="n">high</span><span class="p">[</span><span class="o">-</span><span class="mi">17</span><span class="p">:</span><span class="o">-</span><span class="mi">5</span><span class="p">]</span> <span class="n">r2</span><span class="o">.</span><span class="n">marker</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="mi">12</span><span class="p">)</span> <span class="k">print</span> <span class="s">"r1:"</span> <span class="k">print</span> <span class="n">mlab</span><span class="o">.</span><span class="n">rec2txt</span><span class="p">(</span><span class="n">r1</span><span class="p">)</span> <span class="k">print</span> <span class="s">"r2:"</span> <span class="k">print</span> <span class="n">mlab</span><span class="o">.</span><span class="n">rec2txt</span><span class="p">(</span><span class="n">r2</span><span class="p">)</span> <span class="n">defaults</span> <span class="o">=</span> <span class="p">{</span><span class="s">'marker'</span><span class="p">:</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="s">'close'</span><span class="p">:</span><span class="n">np</span><span class="o">.</span><span class="n">NaN</span><span class="p">,</span> <span class="s">'low'</span><span class="p">:</span><span class="o">-</span><span class="mf">4444.</span><span class="p">}</span> <span class="k">for</span> <span class="n">s</span> <span class="ow">in</span> <span class="p">(</span><span class="s">'inner'</span><span class="p">,</span> <span class="s">'outer'</span><span class="p">,</span> <span class="s">'leftouter'</span><span class="p">):</span> <span class="n">rec</span> <span class="o">=</span> <span class="n">mlab</span><span class="o">.</span><span class="n">rec_join</span><span class="p">([</span><span class="s">'date'</span><span class="p">,</span> <span class="s">'high'</span><span class="p">],</span> <span class="n">r1</span><span class="p">,</span> <span class="n">r2</span><span class="p">,</span> <span class="n">jointype</span><span class="o">=</span><span class="n">s</span><span class="p">,</span> <span class="n">defaults</span><span class="o">=</span><span class="n">defaults</span><span class="p">)</span> <span class="k">print</span> <span class="s">"</span><span class="se">\n</span><span class="si">%s</span><span class="s">join :</span><span class="se">\n</span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">s</span><span class="p">,</span> <span class="n">mlab</span><span class="o">.</span><span class="n">rec2txt</span><span class="p">(</span><span class="n">rec</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>| 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