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327 lines
31 KiB
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<meta http-equiv="content-type" content="text/html;charset=utf-8">
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<title>kartograph.py</title>
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<link rel="stylesheet" href="pycco.css">
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<div class='docs'><h1>kartograph.py</h1></div>
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<div class='section' id='section-0'>
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<div class='docs'>
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<a class='octothorpe' href='#section-0'>#</a>
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<div class='code'>
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<div class="highlight"><pre><span class="kn">from</span> <span class="nn">options</span> <span class="kn">import</span> <span class="n">parse_options</span>
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<span class="kn">from</span> <span class="nn">shapely.geometry</span> <span class="kn">import</span> <span class="n">Polygon</span><span class="p">,</span> <span class="n">LineString</span><span class="p">,</span> <span class="n">MultiPolygon</span>
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<span class="kn">from</span> <span class="nn">errors</span> <span class="kn">import</span> <span class="o">*</span>
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<span class="kn">from</span> <span class="nn">copy</span> <span class="kn">import</span> <span class="n">deepcopy</span>
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<span class="kn">from</span> <span class="nn">renderer</span> <span class="kn">import</span> <span class="n">SvgRenderer</span><span class="p">,</span> <span class="n">KmlRenderer</span>
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<span class="kn">from</span> <span class="nn">map</span> <span class="kn">import</span> <span class="n">Map</span></pre></div>
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</div>
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</div>
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<div class='section' id='section-1'>
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<div class='docs'>
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<div class='octowrap'>
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<a class='octothorpe' href='#section-1'>#</a>
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</div>
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<h2>Kartograph</h2>
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</div>
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<div class='code'>
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<div class="highlight"><pre><span class="n">verbose</span> <span class="o">=</span> <span class="bp">False</span></pre></div>
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</div>
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</div>
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<div class='section' id='section-2'>
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<a class='octothorpe' href='#section-2'>#</a>
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<p>These renderers are currently available. See <a href="renderer/svg.html">renderer/svg.py</a> and renderer/kml.py
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for more details on those.</p>
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</div>
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<div class='code'>
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<div class="highlight"><pre><span class="n">_known_renderer</span> <span class="o">=</span> <span class="p">{</span>
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<span class="s">'svg'</span><span class="p">:</span> <span class="n">SvgRenderer</span><span class="p">,</span>
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<span class="s">'kml'</span><span class="p">:</span> <span class="n">KmlRenderer</span>
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<span class="p">}</span></pre></div>
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</div>
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</div>
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<div class='section' id='section-3'>
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<a class='octothorpe' href='#section-3'>#</a>
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<div class='code'>
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<div class="highlight"><pre><span class="k">class</span> <span class="nc">Kartograph</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span></pre></div>
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</div>
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</div>
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<div class='section' id='section-4'>
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<div class='docs'>
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<a class='octothorpe' href='#section-4'>#</a>
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<div class='code'>
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<div class="highlight"><pre> <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
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<span class="bp">self</span><span class="o">.</span><span class="n">layerCache</span> <span class="o">=</span> <span class="p">{}</span>
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<span class="k">pass</span></pre></div>
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</div>
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</div>
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<div class='section' id='section-5'>
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<a class='octothorpe' href='#section-5'>#</a>
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<p>Generates a the map and renders it using the specified output format.</p>
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</div>
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<div class='code'>
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<div class="highlight"><pre> <span class="k">def</span> <span class="nf">generate</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">opts</span><span class="p">,</span> <span class="n">outfile</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">format</span><span class="o">=</span><span class="s">'svg'</span><span class="p">,</span> <span class="n">preview</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span></pre></div>
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</div>
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<div class='section' id='section-6'>
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<div class='docs'>
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<div class='octowrap'>
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<a class='octothorpe' href='#section-6'>#</a>
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<div class='code'>
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<div class="highlight"><pre> <span class="k">if</span> <span class="n">preview</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
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<span class="n">preview</span> <span class="o">=</span> <span class="n">outfile</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span></pre></div>
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</div>
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</div>
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<div class='section' id='section-7'>
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<div class='docs'>
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<div class='octowrap'>
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<a class='octothorpe' href='#section-7'>#</a>
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</div>
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<p>Create a deep copy of the options dictionary so our changes will not be
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visible to the calling application.</p>
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</div>
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<div class='code'>
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<div class="highlight"><pre> <span class="n">opts</span> <span class="o">=</span> <span class="n">deepcopy</span><span class="p">(</span><span class="n">opts</span><span class="p">)</span></pre></div>
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</div>
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<div class='section' id='section-8'>
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<div class='docs'>
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<div class='octowrap'>
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<a class='octothorpe' href='#section-8'>#</a>
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</div>
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<p>Parse the options dictionary. See options.py for more details.</p>
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</div>
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<div class='code'>
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<div class="highlight"><pre> <span class="n">parse_options</span><span class="p">(</span><span class="n">opts</span><span class="p">)</span></pre></div>
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</div>
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</div>
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<div class='clearall'></div>
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<div class='section' id='section-9'>
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<div class='docs'>
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<div class='octowrap'>
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<a class='octothorpe' href='#section-9'>#</a>
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</div>
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<p>Create the map instance. It will do all the hard work for us, so you
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definitely should check out <a href="map.html">map.py</a> for all the fun stuff happending
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there..</p>
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</div>
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<div class='code'>
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<div class="highlight"><pre> <span class="n">_map</span> <span class="o">=</span> <span class="n">Map</span><span class="p">(</span><span class="n">opts</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">layerCache</span><span class="p">,</span> <span class="n">format</span><span class="o">=</span><span class="n">format</span><span class="p">)</span></pre></div>
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</div>
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</div>
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<div class='clearall'></div>
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<div class='section' id='section-10'>
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<div class='docs'>
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<div class='octowrap'>
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<a class='octothorpe' href='#section-10'>#</a>
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</div>
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<p>Check if the format is handled by a renderer.</p>
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</div>
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<div class='code'>
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<div class="highlight"><pre> <span class="n">format</span> <span class="o">=</span> <span class="n">format</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span>
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<span class="k">if</span> <span class="n">format</span> <span class="ow">in</span> <span class="n">_known_renderer</span><span class="p">:</span></pre></div>
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</div>
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</div>
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<div class='clearall'></div>
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<div class='section' id='section-11'>
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<div class='docs'>
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<div class='octowrap'>
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<a class='octothorpe' href='#section-11'>#</a>
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</div>
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<p>Create a renderer instance and render the map.</p>
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</div>
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<div class='code'>
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<div class="highlight"><pre> <span class="n">renderer</span> <span class="o">=</span> <span class="n">_known_renderer</span><span class="p">[</span><span class="n">format</span><span class="p">](</span><span class="n">_map</span><span class="p">)</span>
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<span class="n">renderer</span><span class="o">.</span><span class="n">render</span><span class="p">()</span></pre></div>
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</div>
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</div>
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<div class='clearall'></div>
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<div class='section' id='section-12'>
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<div class='docs'>
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<div class='octowrap'>
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<a class='octothorpe' href='#section-12'>#</a>
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</div>
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<p>If requested, we try to preview the created map now, which means that
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we open the created SVG file in Firefox or open the KML in Google Earth.
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Of course, preview modes are highly dependent on the operating system, but
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we don't care about that now.</p>
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</div>
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<div class='code'>
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<div class="highlight"><pre> <span class="k">if</span> <span class="n">preview</span><span class="p">:</span>
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<span class="n">renderer</span><span class="o">.</span><span class="n">preview</span><span class="p">()</span></pre></div>
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</div>
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</div>
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<div class='clearall'></div>
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<div class='section' id='section-13'>
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<div class='docs'>
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<div class='octowrap'>
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<a class='octothorpe' href='#section-13'>#</a>
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</div>
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<p>Write the map to a file or return the renderer instance.</p>
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</div>
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<div class='code'>
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<div class="highlight"><pre> <span class="k">if</span> <span class="n">outfile</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
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<span class="k">return</span> <span class="n">renderer</span>
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<span class="k">else</span><span class="p">:</span>
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<span class="n">renderer</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">outfile</span><span class="p">)</span>
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<span class="k">else</span><span class="p">:</span>
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<span class="k">raise</span> <span class="n">KartographError</span><span class="p">(</span><span class="s">'unknown format: </span><span class="si">%s</span><span class="s">'</span> <span class="o">%</span> <span class="n">format</span><span class="p">)</span></pre></div>
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</div>
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</div>
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<div class='clearall'></div>
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<div class='section' id='section-14'>
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<div class='docs'>
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<div class='octowrap'>
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<a class='octothorpe' href='#section-14'>#</a>
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</div>
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<p>Here are some handy methods for debugging Kartograph. It will plot a given shapely
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geometry using matplotlib and descartes.</p>
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</div>
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<div class='code'>
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<div class="highlight"><pre><span class="k">def</span> <span class="nf">_plot_geometry</span><span class="p">(</span><span class="n">geom</span><span class="p">,</span> <span class="n">fill</span><span class="o">=</span><span class="s">'#ffcccc'</span><span class="p">,</span> <span class="n">stroke</span><span class="o">=</span><span class="s">'#333333'</span><span class="p">,</span> <span class="n">alpha</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">msg</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
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<span class="kn">from</span> <span class="nn">matplotlib</span> <span class="kn">import</span> <span class="n">pyplot</span>
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<span class="kn">from</span> <span class="nn">matplotlib.figure</span> <span class="kn">import</span> <span class="n">SubplotParams</span>
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<span class="kn">from</span> <span class="nn">descartes</span> <span class="kn">import</span> <span class="n">PolygonPatch</span>
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<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">geom</span><span class="p">,</span> <span class="p">(</span><span class="n">Polygon</span><span class="p">,</span> <span class="n">MultiPolygon</span><span class="p">)):</span>
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<span class="n">b</span> <span class="o">=</span> <span class="n">geom</span><span class="o">.</span><span class="n">bounds</span>
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<span class="n">geoms</span> <span class="o">=</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">geom</span><span class="p">,</span> <span class="s">'geoms'</span><span class="p">)</span> <span class="ow">and</span> <span class="n">geom</span><span class="o">.</span><span class="n">geoms</span> <span class="ow">or</span> <span class="p">[</span><span class="n">geom</span><span class="p">]</span>
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<span class="n">w</span><span class="p">,</span> <span class="n">h</span> <span class="o">=</span> <span class="p">(</span><span class="n">b</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">-</span> <span class="n">b</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">b</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span> <span class="o">-</span> <span class="n">b</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span>
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<span class="n">ratio</span> <span class="o">=</span> <span class="n">w</span> <span class="o">/</span> <span class="n">h</span>
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<span class="n">pad</span> <span class="o">=</span> <span class="mf">0.15</span>
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<span class="n">fig</span> <span class="o">=</span> <span class="n">pyplot</span><span class="o">.</span><span class="n">figure</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="n">figsize</span><span class="o">=</span><span class="p">(</span><span class="mi">5</span><span class="p">,</span> <span class="mi">5</span> <span class="o">/</span> <span class="n">ratio</span><span class="p">),</span> <span class="n">dpi</span><span class="o">=</span><span class="mi">110</span><span class="p">,</span> <span class="n">subplotpars</span><span class="o">=</span><span class="n">SubplotParams</span><span class="p">(</span><span class="n">left</span><span class="o">=</span><span class="n">pad</span><span class="p">,</span> <span class="n">bottom</span><span class="o">=</span><span class="n">pad</span><span class="p">,</span> <span class="n">top</span><span class="o">=</span><span class="mi">1</span> <span class="o">-</span> <span class="n">pad</span><span class="p">,</span> <span class="n">right</span><span class="o">=</span><span class="mi">1</span> <span class="o">-</span> <span class="n">pad</span><span class="p">))</span>
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<span class="n">ax</span> <span class="o">=</span> <span class="n">fig</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="n">aspect</span><span class="o">=</span><span class="s">'equal'</span><span class="p">)</span>
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<span class="k">for</span> <span class="n">geom</span> <span class="ow">in</span> <span class="n">geoms</span><span class="p">:</span>
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<span class="n">patch1</span> <span class="o">=</span> <span class="n">PolygonPatch</span><span class="p">(</span><span class="n">geom</span><span class="p">,</span> <span class="n">linewidth</span><span class="o">=</span><span class="mf">0.5</span><span class="p">,</span> <span class="n">fc</span><span class="o">=</span><span class="n">fill</span><span class="p">,</span> <span class="n">ec</span><span class="o">=</span><span class="n">stroke</span><span class="p">,</span> <span class="n">alpha</span><span class="o">=</span><span class="n">alpha</span><span class="p">,</span> <span class="n">zorder</span><span class="o">=</span><span class="mi">0</span><span class="p">)</span>
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<span class="n">ax</span><span class="o">.</span><span class="n">add_patch</span><span class="p">(</span><span class="n">patch1</span><span class="p">)</span>
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<span class="n">p</span> <span class="o">=</span> <span class="p">(</span><span class="n">b</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">-</span> <span class="n">b</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">*</span> <span class="mf">0.03</span> <span class="c"># some padding</span>
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<span class="n">pyplot</span><span class="o">.</span><span class="n">axis</span><span class="p">([</span><span class="n">b</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">-</span> <span class="n">p</span><span class="p">,</span> <span class="n">b</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">+</span> <span class="n">p</span><span class="p">,</span> <span class="n">b</span><span class="p">[</span><span class="mi">3</span><span class="p">]</span> <span class="o">+</span> <span class="n">p</span><span class="p">,</span> <span class="n">b</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">-</span> <span class="n">p</span><span class="p">])</span>
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<span class="n">pyplot</span><span class="o">.</span><span class="n">grid</span><span class="p">(</span><span class="bp">True</span><span class="p">)</span>
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<span class="k">if</span> <span class="n">msg</span><span class="p">:</span>
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<span class="n">fig</span><span class="o">.</span><span class="n">suptitle</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="n">y</span><span class="o">=</span><span class="mf">0.04</span><span class="p">,</span> <span class="n">fontsize</span><span class="o">=</span><span class="mi">9</span><span class="p">)</span>
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<span class="n">pyplot</span><span class="o">.</span><span class="n">show</span><span class="p">()</span></pre></div>
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</div>
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</div>
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<div class='clearall'></div>
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<div class='section' id='section-15'>
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<div class='docs'>
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<div class='octowrap'>
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<a class='octothorpe' href='#section-15'>#</a>
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</div>
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</div>
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<div class='code'>
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<div class="highlight"><pre><span class="k">def</span> <span class="nf">_plot_lines</span><span class="p">(</span><span class="n">lines</span><span class="p">):</span>
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<span class="kn">from</span> <span class="nn">matplotlib</span> <span class="kn">import</span> <span class="n">pyplot</span></pre></div>
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</div>
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</div>
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<div class='clearall'></div>
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<div class='section' id='section-16'>
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<div class='docs'>
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<div class='octowrap'>
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<a class='octothorpe' href='#section-16'>#</a>
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</div>
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</div>
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<div class='code'>
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<div class="highlight"><pre> <span class="k">def</span> <span class="nf">plot_line</span><span class="p">(</span><span class="n">ax</span><span class="p">,</span> <span class="n">line</span><span class="p">):</span>
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<span class="n">filtered</span> <span class="o">=</span> <span class="p">[]</span>
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<span class="k">for</span> <span class="n">pt</span> <span class="ow">in</span> <span class="n">line</span><span class="p">:</span>
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<span class="k">if</span> <span class="ow">not</span> <span class="n">pt</span><span class="o">.</span><span class="n">deleted</span><span class="p">:</span>
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<span class="n">filtered</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">pt</span><span class="p">)</span>
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<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">filtered</span><span class="p">)</span> <span class="o"><</span> <span class="mi">2</span><span class="p">:</span>
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<span class="k">return</span>
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<span class="n">ob</span> <span class="o">=</span> <span class="n">LineString</span><span class="p">(</span><span class="n">line</span><span class="p">)</span>
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<span class="n">x</span><span class="p">,</span> <span class="n">y</span> <span class="o">=</span> <span class="n">ob</span><span class="o">.</span><span class="n">xy</span>
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<span class="n">ax</span><span class="o">.</span><span class="n">plot</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="s">'-'</span><span class="p">,</span> <span class="n">color</span><span class="o">=</span><span class="s">'#333333'</span><span class="p">,</span> <span class="n">linewidth</span><span class="o">=</span><span class="mf">0.5</span><span class="p">,</span> <span class="n">solid_capstyle</span><span class="o">=</span><span class="s">'round'</span><span class="p">,</span> <span class="n">zorder</span><span class="o">=</span><span class="mi">1</span><span class="p">)</span>
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<span class="n">fig</span> <span class="o">=</span> <span class="n">pyplot</span><span class="o">.</span><span class="n">figure</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="n">figsize</span><span class="o">=</span><span class="p">(</span><span class="mi">4</span><span class="p">,</span> <span class="mf">5.5</span><span class="p">),</span> <span class="n">dpi</span><span class="o">=</span><span class="mi">90</span><span class="p">,</span> <span class="n">subplotpars</span><span class="o">=</span><span class="n">SubplotParams</span><span class="p">(</span><span class="n">left</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span> <span class="n">bottom</span><span class="o">=</span><span class="mf">0.065</span><span class="p">,</span> <span class="n">top</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">right</span><span class="o">=</span><span class="mi">1</span><span class="p">))</span>
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<span class="n">ax</span> <span class="o">=</span> <span class="n">fig</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="n">aspect</span><span class="o">=</span><span class="s">'equal'</span><span class="p">)</span>
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<span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="n">lines</span><span class="p">:</span>
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<span class="n">plot_line</span><span class="p">(</span><span class="n">ax</span><span class="p">,</span> <span class="n">line</span><span class="p">)</span>
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<span class="n">pyplot</span><span class="o">.</span><span class="n">grid</span><span class="p">(</span><span class="bp">False</span><span class="p">)</span>
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<span class="n">ax</span><span class="o">.</span><span class="n">xaxis</span><span class="o">.</span><span class="n">set_visible</span><span class="p">(</span><span class="bp">False</span><span class="p">)</span>
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<span class="n">ax</span><span class="o">.</span><span class="n">yaxis</span><span class="o">.</span><span class="n">set_visible</span><span class="p">(</span><span class="bp">False</span><span class="p">)</span>
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<span class="n">ax</span><span class="o">.</span><span class="n">set_frame_on</span><span class="p">(</span><span class="bp">False</span><span class="p">)</span>
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<span class="k">return</span> <span class="p">(</span><span class="n">ax</span><span class="p">,</span> <span class="n">fig</span><span class="p">)</span></pre></div>
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</div>
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</div>
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<div class='clearall'></div>
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<div class='section' id='section-17'>
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<div class='docs'>
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<div class='octowrap'>
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<a class='octothorpe' href='#section-17'>#</a>
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</div>
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</div>
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<div class='code'>
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<div class="highlight"><pre><span class="k">def</span> <span class="nf">_debug_show_features</span><span class="p">(</span><span class="n">features</span><span class="p">,</span> <span class="n">message</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
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<span class="kn">from</span> <span class="nn">descartes</span> <span class="kn">import</span> <span class="n">PolygonPatch</span>
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<span class="kn">from</span> <span class="nn">matplotlib</span> <span class="kn">import</span> <span class="n">pyplot</span>
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<span class="kn">from</span> <span class="nn">matplotlib.figure</span> <span class="kn">import</span> <span class="n">SubplotParams</span>
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<span class="n">fig</span> <span class="o">=</span> <span class="n">pyplot</span><span class="o">.</span><span class="n">figure</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="n">figsize</span><span class="o">=</span><span class="p">(</span><span class="mi">9</span><span class="p">,</span> <span class="mf">5.5</span><span class="p">),</span> <span class="n">dpi</span><span class="o">=</span><span class="mi">110</span><span class="p">,</span> <span class="n">subplotpars</span><span class="o">=</span><span class="n">SubplotParams</span><span class="p">(</span><span class="n">left</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span> <span class="n">bottom</span><span class="o">=</span><span class="mf">0.065</span><span class="p">,</span> <span class="n">top</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">right</span><span class="o">=</span><span class="mi">1</span><span class="p">))</span>
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<span class="n">ax</span> <span class="o">=</span> <span class="n">fig</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="n">aspect</span><span class="o">=</span><span class="s">'equal'</span><span class="p">)</span>
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<span class="n">b</span> <span class="o">=</span> <span class="p">(</span><span class="mi">100000</span><span class="p">,</span> <span class="mi">100000</span><span class="p">,</span> <span class="o">-</span><span class="mi">100000</span><span class="p">,</span> <span class="o">-</span><span class="mi">100000</span><span class="p">)</span>
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<span class="k">for</span> <span class="n">feat</span> <span class="ow">in</span> <span class="n">features</span><span class="p">:</span>
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<span class="k">if</span> <span class="n">feat</span><span class="o">.</span><span class="n">geom</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
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<span class="k">continue</span>
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<span class="n">c</span> <span class="o">=</span> <span class="n">feat</span><span class="o">.</span><span class="n">geom</span><span class="o">.</span><span class="n">bounds</span>
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<span class="n">b</span> <span class="o">=</span> <span class="p">(</span><span class="nb">min</span><span class="p">(</span><span class="n">c</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">b</span><span class="p">[</span><span class="mi">0</span><span class="p">]),</span> <span class="nb">min</span><span class="p">(</span><span class="n">c</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">b</span><span class="p">[</span><span class="mi">1</span><span class="p">]),</span> <span class="nb">max</span><span class="p">(</span><span class="n">c</span><span class="p">[</span><span class="mi">2</span><span class="p">],</span> <span class="n">b</span><span class="p">[</span><span class="mi">2</span><span class="p">]),</span> <span class="nb">max</span><span class="p">(</span><span class="n">c</span><span class="p">[</span><span class="mi">3</span><span class="p">],</span> <span class="n">b</span><span class="p">[</span><span class="mi">3</span><span class="p">]))</span>
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<span class="n">geoms</span> <span class="o">=</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">feat</span><span class="o">.</span><span class="n">geom</span><span class="p">,</span> <span class="s">'geoms'</span><span class="p">)</span> <span class="ow">and</span> <span class="n">feat</span><span class="o">.</span><span class="n">geom</span><span class="o">.</span><span class="n">geoms</span> <span class="ow">or</span> <span class="p">[</span><span class="n">feat</span><span class="o">.</span><span class="n">geom</span><span class="p">]</span>
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<span class="k">for</span> <span class="n">geom</span> <span class="ow">in</span> <span class="n">geoms</span><span class="p">:</span>
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<span class="n">patch1</span> <span class="o">=</span> <span class="n">PolygonPatch</span><span class="p">(</span><span class="n">geom</span><span class="p">,</span> <span class="n">linewidth</span><span class="o">=</span><span class="mf">0.25</span><span class="p">,</span> <span class="n">fc</span><span class="o">=</span><span class="s">'#ddcccc'</span><span class="p">,</span> <span class="n">ec</span><span class="o">=</span><span class="s">'#000000'</span><span class="p">,</span> <span class="n">alpha</span><span class="o">=</span><span class="mf">0.75</span><span class="p">,</span> <span class="n">zorder</span><span class="o">=</span><span class="mi">0</span><span class="p">)</span>
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<span class="n">ax</span><span class="o">.</span><span class="n">add_patch</span><span class="p">(</span><span class="n">patch1</span><span class="p">)</span>
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<span class="n">p</span> <span class="o">=</span> <span class="p">(</span><span class="n">b</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">-</span> <span class="n">b</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">*</span> <span class="mf">0.05</span> <span class="c"># some padding</span>
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<span class="n">pyplot</span><span class="o">.</span><span class="n">axis</span><span class="p">([</span><span class="n">b</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">-</span> <span class="n">p</span><span class="p">,</span> <span class="n">b</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="o">+</span> <span class="n">p</span><span class="p">,</span> <span class="n">b</span><span class="p">[</span><span class="mi">3</span><span class="p">],</span> <span class="n">b</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="o">-</span> <span class="n">p</span><span class="p">])</span>
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<span class="n">ax</span><span class="o">.</span><span class="n">xaxis</span><span class="o">.</span><span class="n">set_visible</span><span class="p">(</span><span class="bp">False</span><span class="p">)</span>
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<span class="n">ax</span><span class="o">.</span><span class="n">yaxis</span><span class="o">.</span><span class="n">set_visible</span><span class="p">(</span><span class="bp">False</span><span class="p">)</span>
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<span class="n">ax</span><span class="o">.</span><span class="n">set_frame_on</span><span class="p">(</span><span class="bp">True</span><span class="p">)</span>
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<span class="k">if</span> <span class="n">message</span><span class="p">:</span>
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<span class="n">fig</span><span class="o">.</span><span class="n">suptitle</span><span class="p">(</span><span class="n">message</span><span class="p">,</span> <span class="n">y</span><span class="o">=</span><span class="mf">0.04</span><span class="p">,</span> <span class="n">fontsize</span><span class="o">=</span><span class="mi">9</span><span class="p">)</span>
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<span class="n">pyplot</span><span class="o">.</span><span class="n">show</span><span class="p">()</span>
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</pre></div>
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</div>
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</div>
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<div class='clearall'></div>
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</div>
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</body>
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