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<div class="section" id="api-example-code-joinstyle-py">
<span id="api-joinstyle"></span><h1>api example code: joinstyle.py<a class="headerlink" href="#api-example-code-joinstyle-py" title="Permalink to this headline">¶</a></h1>
<p>(<a class="reference external" href="../../mpl_examples/api/joinstyle.py">Source code</a>, <a class="reference external" href="../../mpl_examples/api/joinstyle.png">png</a>, <a class="reference external" href="../../mpl_examples/api/joinstyle.hires.png">hires.png</a>, <a class="reference external" href="../../mpl_examples/api/joinstyle.pdf">pdf</a>)</p>
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<img alt="../../_images/joinstyle.png" src="../../_images/joinstyle.png" />
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<div class="highlight-python"><div class="highlight"><pre><span class="c">#!/usr/bin/env python</span>
<span class="sd">"""</span>
<span class="sd">Illustrate the three different join styles</span>
<span class="sd">"""</span>
<span class="kn">import</span> <span class="nn">numpy</span> <span class="kn">as</span> <span class="nn">np</span>
<span class="kn">import</span> <span class="nn">matplotlib.pyplot</span> <span class="kn">as</span> <span class="nn">plt</span>
<span class="k">def</span> <span class="nf">plot_angle</span><span class="p">(</span><span class="n">ax</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="n">angle</span><span class="p">,</span> <span class="n">style</span><span class="p">):</span>
<span class="n">phi</span> <span class="o">=</span> <span class="n">angle</span><span class="o">/</span><span class="mi">180</span><span class="o">*</span><span class="n">np</span><span class="o">.</span><span class="n">pi</span>
<span class="n">xx</span> <span class="o">=</span> <span class="p">[</span><span class="n">x</span><span class="o">+.</span><span class="mi">5</span><span class="p">,</span><span class="n">x</span><span class="p">,</span><span class="n">x</span><span class="o">+.</span><span class="mi">5</span><span class="o">*</span><span class="n">np</span><span class="o">.</span><span class="n">cos</span><span class="p">(</span><span class="n">phi</span><span class="p">)]</span>
<span class="n">yy</span> <span class="o">=</span> <span class="p">[</span><span class="n">y</span><span class="p">,</span><span class="n">y</span><span class="p">,</span><span class="n">y</span><span class="o">+.</span><span class="mi">5</span><span class="o">*</span><span class="n">np</span><span class="o">.</span><span class="n">sin</span><span class="p">(</span><span class="n">phi</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">xx</span><span class="p">,</span> <span class="n">yy</span><span class="p">,</span> <span class="n">lw</span><span class="o">=</span><span class="mi">8</span><span class="p">,</span> <span class="n">color</span><span class="o">=</span><span class="s">'blue'</span><span class="p">,</span> <span class="n">solid_joinstyle</span><span class="o">=</span><span class="n">style</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">xx</span><span class="p">[</span><span class="mi">1</span><span class="p">:],</span> <span class="n">yy</span><span class="p">[</span><span class="mi">1</span><span class="p">:],</span> <span class="n">lw</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">color</span><span class="o">=</span><span class="s">'black'</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">xx</span><span class="p">[</span><span class="mi">1</span><span class="p">::</span><span class="o">-</span><span class="mi">1</span><span class="p">],</span> <span class="n">yy</span><span class="p">[</span><span class="mi">1</span><span class="p">::</span><span class="o">-</span><span class="mi">1</span><span class="p">],</span> <span class="n">lw</span><span class="o">=</span><span class="mi">1</span><span class="p">,</span> <span class="n">color</span><span class="o">=</span><span class="s">'black'</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">xx</span><span class="p">[</span><span class="mi">1</span><span class="p">:</span><span class="mi">2</span><span class="p">],</span> <span class="n">yy</span><span class="p">[</span><span class="mi">1</span><span class="p">:</span><span class="mi">2</span><span class="p">],</span> <span class="s">'o'</span><span class="p">,</span> <span class="n">color</span><span class="o">=</span><span class="s">'red'</span><span class="p">,</span> <span class="n">markersize</span><span class="o">=</span><span class="mi">3</span><span class="p">)</span>
<span class="n">ax</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="n">x</span><span class="p">,</span><span class="n">y</span><span class="o">+.</span><span class="mi">2</span><span class="p">,</span><span class="s">'</span><span class="si">%.0f</span><span class="s"> degrees'</span> <span class="o">%</span> <span class="n">angle</span><span class="p">)</span>
<span class="n">fig</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">subplots</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">'Join style'</span><span class="p">)</span>
<span class="k">for</span> <span class="n">x</span><span class="p">,</span><span class="n">style</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(((</span><span class="s">'miter'</span><span class="p">,</span> <span class="s">'round'</span><span class="p">,</span> <span class="s">'bevel'</span><span class="p">))):</span>
<span class="n">ax</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="mi">5</span><span class="p">,</span> <span class="n">style</span><span class="p">)</span>
<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">5</span><span class="p">):</span>
<span class="n">plot_angle</span><span class="p">(</span><span class="n">ax</span><span class="p">,</span> <span class="n">x</span><span class="p">,</span> <span class="n">i</span><span class="p">,</span> <span class="nb">pow</span><span class="p">(</span><span class="mf">2.0</span><span class="p">,</span><span class="mi">3</span><span class="o">+</span><span class="n">i</span><span class="p">),</span> <span class="n">style</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="o">-.</span><span class="mi">5</span><span class="p">,</span><span class="mf">2.75</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="o">-.</span><span class="mi">5</span><span class="p">,</span><span class="mf">5.5</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>
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<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>
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