<!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>user_interfaces example code: mathtext_wx.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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<input type="hidden" name="area" value="default" /> </form> <p class="searchtip" style="font-size: 90%"> Enter search terms or a module, class or function name. </p> </div> <script type="text/javascript">$('#searchbox').show(0);</script> </div> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body"> <div class="section" id="user-interfaces-example-code-mathtext-wx-py"> <span id="user-interfaces-mathtext-wx"></span><h1>user_interfaces example code: mathtext_wx.py<a class="headerlink" href="#user-interfaces-example-code-mathtext-wx-py" title="Permalink to this headline">ΒΆ</a></h1> <p>[<a class="reference external" href="mathtext_wx.py">source code</a>]</p> <div class="highlight-python"><div class="highlight"><pre><span class="sd">"""</span> <span class="sd">Demonstrates how to convert mathtext to a wx.Bitmap for display in various</span> <span class="sd">controls on wxPython.</span> <span class="sd">"""</span> <span class="kn">import</span> <span class="nn">matplotlib</span> <span class="n">matplotlib</span><span class="o">.</span><span class="n">use</span><span class="p">(</span><span class="s">"WxAgg"</span><span class="p">)</span> <span class="kn">from</span> <span class="nn">numpy</span> <span class="kn">import</span> <span class="n">arange</span><span class="p">,</span> <span class="n">sin</span><span class="p">,</span> <span class="n">pi</span><span class="p">,</span> <span class="n">cos</span><span class="p">,</span> <span class="n">log</span> <span class="kn">from</span> <span class="nn">matplotlib.backends.backend_wxagg</span> <span class="kn">import</span> <span class="n">FigureCanvasWxAgg</span> <span class="k">as</span> <span class="n">FigureCanvas</span> <span class="kn">from</span> <span class="nn">matplotlib.backends.backend_wx</span> <span class="kn">import</span> <span class="n">NavigationToolbar2Wx</span> <span class="kn">from</span> <span class="nn">matplotlib.figure</span> <span class="kn">import</span> <span class="n">Figure</span> <span class="kn">import</span> <span class="nn">wx</span> <span class="n">IS_GTK</span> <span class="o">=</span> <span class="s">'wxGTK'</span> <span class="ow">in</span> <span class="n">wx</span><span class="o">.</span><span class="n">PlatformInfo</span> <span class="n">IS_WIN</span> <span class="o">=</span> <span class="s">'wxMSW'</span> <span class="ow">in</span> <span class="n">wx</span><span class="o">.</span><span class="n">PlatformInfo</span> <span class="n">IS_MAC</span> <span class="o">=</span> <span class="s">'wxMac'</span> <span class="ow">in</span> <span class="n">wx</span><span class="o">.</span><span class="n">PlatformInfo</span> <span class="c">############################################################</span> <span class="c"># This is where the "magic" happens.</span> <span class="kn">from</span> <span class="nn">matplotlib.mathtext</span> <span class="kn">import</span> <span class="n">MathTextParser</span> <span class="n">mathtext_parser</span> <span class="o">=</span> <span class="n">MathTextParser</span><span class="p">(</span><span class="s">"Bitmap"</span><span class="p">)</span> <span class="k">def</span> <span class="nf">mathtext_to_wxbitmap</span><span class="p">(</span><span class="n">s</span><span class="p">):</span> <span class="n">ftimage</span><span class="p">,</span> <span class="n">depth</span> <span class="o">=</span> <span class="n">mathtext_parser</span><span class="o">.</span><span class="n">parse</span><span class="p">(</span><span class="n">s</span><span class="p">,</span> <span class="mi">150</span><span class="p">)</span> <span class="k">return</span> <span class="n">wx</span><span class="o">.</span><span class="n">BitmapFromBufferRGBA</span><span class="p">(</span> <span class="n">ftimage</span><span class="o">.</span><span class="n">get_width</span><span class="p">(),</span> <span class="n">ftimage</span><span class="o">.</span><span class="n">get_height</span><span class="p">(),</span> <span class="n">ftimage</span><span class="o">.</span><span class="n">as_rgba_str</span><span class="p">())</span> <span class="c">############################################################</span> <span class="n">functions</span> <span class="o">=</span> <span class="p">[</span> <span class="p">(</span><span class="s">r'$\sin(2 \pi x)$'</span> <span class="p">,</span> <span class="k">lambda</span> <span class="n">x</span><span class="p">:</span> <span class="n">sin</span><span class="p">(</span><span class="mi">2</span><span class="o">*</span><span class="n">pi</span><span class="o">*</span><span class="n">x</span><span class="p">)),</span> <span class="p">(</span><span class="s">r'$\frac{4}{3}\pi x^3$'</span> <span class="p">,</span> <span class="k">lambda</span> <span class="n">x</span><span class="p">:</span> <span class="p">(</span><span class="mf">4.0</span> <span class="o">/</span> <span class="mf">3.0</span><span class="p">)</span> <span class="o">*</span> <span class="n">pi</span> <span class="o">*</span> <span class="n">x</span><span class="o">**</span><span class="mi">3</span><span class="p">),</span> <span class="p">(</span><span class="s">r'$\cos(2 \pi x)$'</span> <span class="p">,</span> <span class="k">lambda</span> <span class="n">x</span><span class="p">:</span> <span class="n">cos</span><span class="p">(</span><span class="mi">2</span><span class="o">*</span><span class="n">pi</span><span class="o">*</span><span class="n">x</span><span class="p">)),</span> <span class="p">(</span><span class="s">r'$\log(x)$'</span> <span class="p">,</span> <span class="k">lambda</span> <span class="n">x</span><span class="p">:</span> <span class="n">log</span><span class="p">(</span><span class="n">x</span><span class="p">))</span> <span class="p">]</span> <span class="k">class</span> <span class="nc">CanvasFrame</span><span class="p">(</span><span class="n">wx</span><span class="o">.</span><span class="n">Frame</span><span class="p">):</span> <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">parent</span><span class="p">,</span> <span class="n">title</span><span class="p">):</span> <span class="n">wx</span><span class="o">.</span><span class="n">Frame</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">parent</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="n">title</span><span class="p">,</span> <span class="n">size</span><span class="o">=</span><span class="p">(</span><span class="mi">550</span><span class="p">,</span> <span class="mi">350</span><span class="p">))</span> <span class="bp">self</span><span class="o">.</span><span class="n">SetBackgroundColour</span><span class="p">(</span><span class="n">wx</span><span class="o">.</span><span class="n">NamedColor</span><span class="p">(</span><span class="s">"WHITE"</span><span class="p">))</span> <span class="bp">self</span><span class="o">.</span><span class="n">figure</span> <span class="o">=</span> <span class="n">Figure</span><span class="p">()</span> <span class="bp">self</span><span class="o">.</span><span class="n">axes</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">figure</span><span class="o">.</span><span class="n">add_subplot</span><span class="p">(</span><span class="mi">111</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">change_plot</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">canvas</span> <span class="o">=</span> <span class="n">FigureCanvas</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">figure</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">sizer</span> <span class="o">=</span> <span class="n">wx</span><span class="o">.</span><span class="n">BoxSizer</span><span class="p">(</span><span class="n">wx</span><span class="o">.</span><span class="n">VERTICAL</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">add_buttonbar</span><span class="p">()</span> <span class="bp">self</span><span class="o">.</span><span class="n">sizer</span><span class="o">.</span><span class="n">Add</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">canvas</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="n">wx</span><span class="o">.</span><span class="n">LEFT</span> <span class="o">|</span> <span class="n">wx</span><span class="o">.</span><span class="n">TOP</span> <span class="o">|</span> <span class="n">wx</span><span class="o">.</span><span class="n">GROW</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">add_toolbar</span><span class="p">()</span> <span class="c"># comment this out for no toolbar</span> <span class="n">menuBar</span> <span class="o">=</span> <span class="n">wx</span><span class="o">.</span><span class="n">MenuBar</span><span class="p">()</span> <span class="c"># File Menu</span> <span class="n">menu</span> <span class="o">=</span> <span class="n">wx</span><span class="o">.</span><span class="n">Menu</span><span class="p">()</span> <span class="n">menu</span><span class="o">.</span><span class="n">Append</span><span class="p">(</span><span class="n">wx</span><span class="o">.</span><span class="n">ID_EXIT</span><span class="p">,</span> <span class="s">"E&xit</span><span class="se">\t</span><span class="s">Alt-X"</span><span class="p">,</span> <span class="s">"Exit this simple sample"</span><span class="p">)</span> <span class="n">menuBar</span><span class="o">.</span><span class="n">Append</span><span class="p">(</span><span class="n">menu</span><span class="p">,</span> <span class="s">"&File"</span><span class="p">)</span> <span class="k">if</span> <span class="n">IS_GTK</span> <span class="ow">or</span> <span class="n">IS_WIN</span><span class="p">:</span> <span class="c"># Equation Menu</span> <span class="n">menu</span> <span class="o">=</span> <span class="n">wx</span><span class="o">.</span><span class="n">Menu</span><span class="p">()</span> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">mt</span><span class="p">,</span> <span class="n">func</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">functions</span><span class="p">):</span> <span class="n">bm</span> <span class="o">=</span> <span class="n">mathtext_to_wxbitmap</span><span class="p">(</span><span class="n">mt</span><span class="p">)</span> <span class="n">item</span> <span class="o">=</span> <span class="n">wx</span><span class="o">.</span><span class="n">MenuItem</span><span class="p">(</span><span class="n">menu</span><span class="p">,</span> <span class="mi">1000</span> <span class="o">+</span> <span class="n">i</span><span class="p">,</span> <span class="s">""</span><span class="p">)</span> <span class="n">item</span><span class="o">.</span><span class="n">SetBitmap</span><span class="p">(</span><span class="n">bm</span><span class="p">)</span> <span class="n">menu</span><span class="o">.</span><span class="n">AppendItem</span><span class="p">(</span><span class="n">item</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">Bind</span><span class="p">(</span><span class="n">wx</span><span class="o">.</span><span class="n">EVT_MENU</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">OnChangePlot</span><span class="p">,</span> <span class="n">item</span><span class="p">)</span> <span class="n">menuBar</span><span class="o">.</span><span class="n">Append</span><span class="p">(</span><span class="n">menu</span><span class="p">,</span> <span class="s">"&Functions"</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">SetMenuBar</span><span class="p">(</span><span class="n">menuBar</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">SetSizer</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">sizer</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">Fit</span><span class="p">()</span> <span class="k">def</span> <span class="nf">add_buttonbar</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="bp">self</span><span class="o">.</span><span class="n">button_bar</span> <span class="o">=</span> <span class="n">wx</span><span class="o">.</span><span class="n">Panel</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">button_bar_sizer</span> <span class="o">=</span> <span class="n">wx</span><span class="o">.</span><span class="n">BoxSizer</span><span class="p">(</span><span class="n">wx</span><span class="o">.</span><span class="n">HORIZONTAL</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">sizer</span><span class="o">.</span><span class="n">Add</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">button_bar</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="n">wx</span><span class="o">.</span><span class="n">LEFT</span> <span class="o">|</span> <span class="n">wx</span><span class="o">.</span><span class="n">TOP</span> <span class="o">|</span> <span class="n">wx</span><span class="o">.</span><span class="n">GROW</span><span class="p">)</span> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">mt</span><span class="p">,</span> <span class="n">func</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">functions</span><span class="p">):</span> <span class="n">bm</span> <span class="o">=</span> <span class="n">mathtext_to_wxbitmap</span><span class="p">(</span><span class="n">mt</span><span class="p">)</span> <span class="n">button</span> <span class="o">=</span> <span class="n">wx</span><span class="o">.</span><span class="n">BitmapButton</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">button_bar</span><span class="p">,</span> <span class="mi">1000</span> <span class="o">+</span> <span class="n">i</span><span class="p">,</span> <span class="n">bm</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">button_bar_sizer</span><span class="o">.</span><span class="n">Add</span><span class="p">(</span><span class="n">button</span><span class="p">,</span> <span class="mi">1</span><span class="p">,</span> <span class="n">wx</span><span class="o">.</span><span class="n">GROW</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">Bind</span><span class="p">(</span><span class="n">wx</span><span class="o">.</span><span class="n">EVT_BUTTON</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">OnChangePlot</span><span class="p">,</span> <span class="n">button</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">button_bar</span><span class="o">.</span><span class="n">SetSizer</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">button_bar_sizer</span><span class="p">)</span> <span class="k">def</span> <span class="nf">add_toolbar</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="sd">"""Copied verbatim from embedding_wx2.py"""</span> <span class="bp">self</span><span class="o">.</span><span class="n">toolbar</span> <span class="o">=</span> <span class="n">NavigationToolbar2Wx</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">canvas</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">toolbar</span><span class="o">.</span><span class="n">Realize</span><span class="p">()</span> <span class="k">if</span> <span class="n">IS_MAC</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">SetToolBar</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">toolbar</span><span class="p">)</span> <span class="k">else</span><span class="p">:</span> <span class="n">tw</span><span class="p">,</span> <span class="n">th</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">toolbar</span><span class="o">.</span><span class="n">GetSizeTuple</span><span class="p">()</span> <span class="n">fw</span><span class="p">,</span> <span class="n">fh</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">canvas</span><span class="o">.</span><span class="n">GetSizeTuple</span><span class="p">()</span> <span class="bp">self</span><span class="o">.</span><span class="n">toolbar</span><span class="o">.</span><span class="n">SetSize</span><span class="p">(</span><span class="n">wx</span><span class="o">.</span><span class="n">Size</span><span class="p">(</span><span class="n">fw</span><span class="p">,</span> <span class="n">th</span><span class="p">))</span> <span class="bp">self</span><span class="o">.</span><span class="n">sizer</span><span class="o">.</span><span class="n">Add</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">toolbar</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="n">wx</span><span class="o">.</span><span class="n">LEFT</span> <span class="o">|</span> <span class="n">wx</span><span class="o">.</span><span class="n">EXPAND</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">toolbar</span><span class="o">.</span><span class="n">update</span><span class="p">()</span> <span class="k">def</span> <span class="nf">OnPaint</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">event</span><span class="p">):</span> <span class="bp">self</span><span class="o">.</span><span class="n">canvas</span><span class="o">.</span><span class="n">draw</span><span class="p">()</span> <span class="k">def</span> <span class="nf">OnChangePlot</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">event</span><span class="p">):</span> <span class="bp">self</span><span class="o">.</span><span class="n">change_plot</span><span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">GetId</span><span class="p">()</span> <span class="o">-</span> <span class="mi">1000</span><span class="p">)</span> <span class="k">def</span> <span class="nf">change_plot</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">plot_number</span><span class="p">):</span> <span class="n">t</span> <span class="o">=</span> <span class="n">arange</span><span class="p">(</span><span class="mf">1.0</span><span class="p">,</span><span class="mf">3.0</span><span class="p">,</span><span class="mf">0.01</span><span class="p">)</span> <span class="n">s</span> <span class="o">=</span> <span class="n">functions</span><span class="p">[</span><span class="n">plot_number</span><span class="p">][</span><span class="mi">1</span><span class="p">](</span><span class="n">t</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">axes</span><span class="o">.</span><span class="n">clear</span><span class="p">()</span> <span class="bp">self</span><span class="o">.</span><span class="n">axes</span><span class="o">.</span><span class="n">plot</span><span class="p">(</span><span class="n">t</span><span class="p">,</span> <span class="n">s</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">Refresh</span><span class="p">()</span> <span class="k">class</span> <span class="nc">MyApp</span><span class="p">(</span><span class="n">wx</span><span class="o">.</span><span class="n">App</span><span class="p">):</span> <span class="k">def</span> <span class="nf">OnInit</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="n">frame</span> <span class="o">=</span> <span class="n">CanvasFrame</span><span class="p">(</span><span class="bp">None</span><span class="p">,</span> <span class="s">"wxPython mathtext demo app"</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">SetTopWindow</span><span class="p">(</span><span class="n">frame</span><span class="p">)</span> <span class="n">frame</span><span class="o">.</span><span class="n">Show</span><span class="p">(</span><span class="bp">True</span><span class="p">)</span> <span class="k">return</span> <span class="bp">True</span> <span class="n">app</span> <span class="o">=</span> <span class="n">MyApp</span><span class="p">()</span> <span class="n">app</span><span class="o">.</span><span class="n">MainLoop</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 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