<!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: demo_annotation_box.py — Matplotlib 1.2.0 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: '1.2.0', 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 1.2.0 documentation" href="../../_static/opensearch.xml"/> <link rel="top" title="Matplotlib 1.2.0 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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class="nn">matplotlib.offsetbox</span> <span class="kn">import</span> <span class="n">TextArea</span><span class="p">,</span> <span class="n">DrawingArea</span><span class="p">,</span> <span class="n">OffsetImage</span><span class="p">,</span> \ <span class="n">AnnotationBbox</span> <span class="kn">from</span> <span class="nn">matplotlib.cbook</span> <span class="kn">import</span> <span class="n">get_sample_data</span> <span class="kn">import</span> <span class="nn">numpy</span> <span class="kn">as</span> <span class="nn">np</span> <span class="k">if</span> <span class="mi">1</span><span class="p">:</span> <span class="n">fig</span> <span class="o">=</span> <span class="n">plt</span><span class="o">.</span><span class="n">gcf</span><span class="p">()</span> <span class="n">fig</span><span class="o">.</span><span class="n">clf</span><span class="p">()</span> <span class="n">ax</span> <span class="o">=</span> <span class="n">plt</span><span class="o">.</span><span class="n">subplot</span><span class="p">(</span><span class="mi">111</span><span class="p">)</span> <span class="n">offsetbox</span> <span class="o">=</span> <span class="n">TextArea</span><span class="p">(</span><span class="s">"Test 1"</span><span class="p">,</span> <span class="n">minimumdescent</span><span class="o">=</span><span class="bp">False</span><span class="p">)</span> <span class="n">xy</span> <span class="o">=</span> <span class="p">(</span><span class="mf">0.5</span><span class="p">,</span> <span class="mf">0.7</span><span class="p">)</span> <span class="n">ax</span><span class="o">.</span><span class="n">plot</span><span class="p">(</span><span class="n">xy</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">xy</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="s">".r"</span><span class="p">)</span> <span class="n">ab</span> <span class="o">=</span> <span class="n">AnnotationBbox</span><span class="p">(</span><span class="n">offsetbox</span><span class="p">,</span> <span class="n">xy</span><span class="p">,</span> <span class="n">xybox</span><span class="o">=</span><span class="p">(</span><span class="o">-</span><span class="mi">20</span><span class="p">,</span> <span class="mi">40</span><span class="p">),</span> <span class="n">xycoords</span><span class="o">=</span><span class="s">'data'</span><span class="p">,</span> <span class="n">boxcoords</span><span class="o">=</span><span class="s">"offset points"</span><span class="p">,</span> <span class="n">arrowprops</span><span class="o">=</span><span class="nb">dict</span><span class="p">(</span><span class="n">arrowstyle</span><span class="o">=</span><span class="s">"->"</span><span class="p">))</span> <span class="n">ax</span><span class="o">.</span><span class="n">add_artist</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span> <span class="n">offsetbox</span> <span class="o">=</span> <span class="n">TextArea</span><span class="p">(</span><span class="s">"Test"</span><span class="p">,</span> <span class="n">minimumdescent</span><span class="o">=</span><span class="bp">False</span><span class="p">)</span> <span class="n">ab</span> <span class="o">=</span> <span class="n">AnnotationBbox</span><span class="p">(</span><span class="n">offsetbox</span><span class="p">,</span> <span class="n">xy</span><span class="p">,</span> <span class="n">xybox</span><span class="o">=</span><span class="p">(</span><span class="mf">1.02</span><span class="p">,</span> <span class="n">xy</span><span class="p">[</span><span class="mi">1</span><span class="p">]),</span> <span class="n">xycoords</span><span class="o">=</span><span class="s">'data'</span><span class="p">,</span> <span class="n">boxcoords</span><span class="o">=</span><span class="p">(</span><span class="s">"axes fraction"</span><span class="p">,</span> <span class="s">"data"</span><span class="p">),</span> <span class="n">box_alignment</span><span class="o">=</span><span class="p">(</span><span class="mf">0.</span><span class="p">,</span><span class="mf">0.5</span><span class="p">),</span> <span class="n">arrowprops</span><span class="o">=</span><span class="nb">dict</span><span class="p">(</span><span class="n">arrowstyle</span><span class="o">=</span><span class="s">"->"</span><span class="p">))</span> <span class="n">ax</span><span class="o">.</span><span class="n">add_artist</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span> <span class="kn">from</span> <span class="nn">matplotlib.patches</span> <span class="kn">import</span> <span class="n">Circle</span> <span class="n">da</span> <span class="o">=</span> <span class="n">DrawingArea</span><span class="p">(</span><span class="mi">20</span><span class="p">,</span> <span class="mi">20</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="n">p</span> <span class="o">=</span> <span class="n">Circle</span><span class="p">((</span><span class="mi">10</span><span class="p">,</span> <span class="mi">10</span><span class="p">),</span> <span class="mi">10</span><span class="p">)</span> <span class="n">da</span><span class="o">.</span><span class="n">add_artist</span><span class="p">(</span><span class="n">p</span><span class="p">)</span> <span class="n">xy</span> <span class="o">=</span> <span class="p">[</span><span class="mf">0.3</span><span class="p">,</span> <span class="mf">0.55</span><span class="p">]</span> <span class="n">ab</span> <span class="o">=</span> <span class="n">AnnotationBbox</span><span class="p">(</span><span class="n">da</span><span class="p">,</span> <span class="n">xy</span><span class="p">,</span> <span class="n">xybox</span><span class="o">=</span><span class="p">(</span><span class="mf">1.02</span><span class="p">,</span> <span class="n">xy</span><span class="p">[</span><span class="mi">1</span><span class="p">]),</span> <span class="n">xycoords</span><span class="o">=</span><span class="s">'data'</span><span class="p">,</span> <span class="n">boxcoords</span><span class="o">=</span><span class="p">(</span><span class="s">"axes fraction"</span><span class="p">,</span> <span class="s">"data"</span><span class="p">),</span> <span class="n">box_alignment</span><span class="o">=</span><span class="p">(</span><span class="mf">0.</span><span class="p">,</span><span class="mf">0.5</span><span class="p">),</span> <span class="n">arrowprops</span><span class="o">=</span><span class="nb">dict</span><span class="p">(</span><span class="n">arrowstyle</span><span class="o">=</span><span class="s">"->"</span><span class="p">))</span> <span class="c">#arrowprops=None)</span> <span class="n">ax</span><span class="o">.</span><span class="n">add_artist</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span> <span class="n">arr</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">100</span><span class="p">)</span><span class="o">.</span><span class="n">reshape</span><span class="p">((</span><span class="mi">10</span><span class="p">,</span><span class="mi">10</span><span class="p">))</span> <span class="n">im</span> <span class="o">=</span> <span class="n">OffsetImage</span><span class="p">(</span><span class="n">arr</span><span class="p">,</span> <span class="n">zoom</span><span class="o">=</span><span class="mi">2</span><span class="p">)</span> <span class="n">ab</span> <span class="o">=</span> <span class="n">AnnotationBbox</span><span class="p">(</span><span class="n">im</span><span class="p">,</span> <span class="n">xy</span><span class="p">,</span> <span class="n">xybox</span><span class="o">=</span><span class="p">(</span><span class="o">-</span><span class="mf">50.</span><span class="p">,</span> <span class="mf">50.</span><span class="p">),</span> <span class="n">xycoords</span><span class="o">=</span><span class="s">'data'</span><span class="p">,</span> <span class="n">boxcoords</span><span class="o">=</span><span class="s">"offset points"</span><span class="p">,</span> <span class="n">pad</span><span class="o">=</span><span class="mf">0.3</span><span class="p">,</span> <span class="n">arrowprops</span><span class="o">=</span><span class="nb">dict</span><span class="p">(</span><span class="n">arrowstyle</span><span class="o">=</span><span class="s">"->"</span><span class="p">))</span> <span class="c">#arrowprops=None)</span> <span class="n">ax</span><span class="o">.</span><span class="n">add_artist</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span> <span class="c"># another image</span> <span class="kn">from</span> <span class="nn">matplotlib._png</span> <span class="kn">import</span> <span class="n">read_png</span> <span class="n">fn</span> <span class="o">=</span> <span class="n">get_sample_data</span><span class="p">(</span><span class="s">"lena.png"</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="n">arr_lena</span> <span class="o">=</span> <span class="n">read_png</span><span class="p">(</span><span class="n">fn</span><span class="p">)</span> <span class="n">imagebox</span> <span class="o">=</span> <span class="n">OffsetImage</span><span class="p">(</span><span class="n">arr_lena</span><span class="p">,</span> <span class="n">zoom</span><span class="o">=</span><span class="mf">0.2</span><span class="p">)</span> <span class="n">ab</span> <span class="o">=</span> <span class="n">AnnotationBbox</span><span class="p">(</span><span class="n">imagebox</span><span class="p">,</span> <span class="n">xy</span><span class="p">,</span> <span class="n">xybox</span><span class="o">=</span><span class="p">(</span><span class="mf">120.</span><span class="p">,</span> <span class="o">-</span><span class="mf">80.</span><span class="p">),</span> <span class="n">xycoords</span><span class="o">=</span><span class="s">'data'</span><span class="p">,</span> <span class="n">boxcoords</span><span class="o">=</span><span class="s">"offset points"</span><span class="p">,</span> <span class="n">pad</span><span class="o">=</span><span class="mf">0.5</span><span class="p">,</span> <span class="n">arrowprops</span><span class="o">=</span><span class="nb">dict</span><span class="p">(</span><span class="n">arrowstyle</span><span class="o">=</span><span class="s">"->"</span><span class="p">,</span> <span class="n">connectionstyle</span><span class="o">=</span><span class="s">"angle,angleA=0,angleB=90,rad=3"</span><span class="p">)</span> <span class="p">)</span> <span class="n">ax</span><span class="o">.</span><span class="n">add_artist</span><span class="p">(</span><span class="n">ab</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="mi">0</span><span class="p">,</span> <span class="mi">1</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="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span> <span class="n">plt</span><span class="o">.</span><span class="n">draw</span><span class="p">()</span> <span class="n">plt</span><span class="o">.</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" 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