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<div class="section" id="animation-example-code-subplots-py">
<span id="animation-subplots"></span><h1>animation example code: subplots.py<a class="headerlink" href="#animation-example-code-subplots-py" title="Permalink to this headline">ΒΆ</a></h1>
<p>[<a class="reference external" href="subplots.py">source code</a>]</p>
<div class="highlight-python"><div class="highlight"><pre><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="kn">from</span> <span class="nn">matplotlib.lines</span> <span class="kn">import</span> <span class="n">Line2D</span>
<span class="kn">import</span> <span class="nn">matplotlib.animation</span> <span class="kn">as</span> <span class="nn">animation</span>
<span class="c"># This example uses subclassing, but there is no reason that the proper function</span>
<span class="c"># couldn't be set up and then use FuncAnimation. The code is long, but not</span>
<span class="c"># really complex. The length is due solely to the fact that there are a total</span>
<span class="c"># of 9 lines that need to be changed for the animation as well as 3 subplots</span>
<span class="c"># that need initial set up.</span>
<span class="k">class</span> <span class="nc">SubplotAnimation</span><span class="p">(</span><span class="n">animation</span><span class="o">.</span><span class="n">TimedAnimation</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">fig</span> <span class="o">=</span> <span class="n">plt</span><span class="o">.</span><span class="n">figure</span><span class="p">()</span>
<span class="n">ax1</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">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="n">ax2</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">2</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">2</span><span class="p">)</span>
<span class="n">ax3</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">2</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">4</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">t</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">linspace</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">80</span><span class="p">,</span> <span class="mi">400</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">x</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="mi">2</span> <span class="o">*</span> <span class="n">np</span><span class="o">.</span><span class="n">pi</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">t</span> <span class="o">/</span> <span class="mf">10.</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">y</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="mi">2</span> <span class="o">*</span> <span class="n">np</span><span class="o">.</span><span class="n">pi</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">t</span> <span class="o">/</span> <span class="mf">10.</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">z</span> <span class="o">=</span> <span class="mi">10</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">t</span>
<span class="n">ax1</span><span class="o">.</span><span class="n">set_xlabel</span><span class="p">(</span><span class="s">'x'</span><span class="p">)</span>
<span class="n">ax1</span><span class="o">.</span><span class="n">set_ylabel</span><span class="p">(</span><span class="s">'y'</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line1</span> <span class="o">=</span> <span class="n">Line2D</span><span class="p">([],</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="bp">self</span><span class="o">.</span><span class="n">line1a</span> <span class="o">=</span> <span class="n">Line2D</span><span class="p">([],</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">linewidth</span><span class="o">=</span><span class="mi">2</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line1e</span> <span class="o">=</span> <span class="n">Line2D</span><span class="p">([],</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">marker</span><span class="o">=</span><span class="s">'o'</span><span class="p">,</span> <span class="n">markeredgecolor</span><span class="o">=</span><span class="s">'r'</span><span class="p">)</span>
<span class="n">ax1</span><span class="o">.</span><span class="n">add_line</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">line1</span><span class="p">)</span>
<span class="n">ax1</span><span class="o">.</span><span class="n">add_line</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">line1a</span><span class="p">)</span>
<span class="n">ax1</span><span class="o">.</span><span class="n">add_line</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">line1e</span><span class="p">)</span>
<span class="n">ax1</span><span class="o">.</span><span class="n">set_xlim</span><span class="p">(</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="n">ax1</span><span class="o">.</span><span class="n">set_ylim</span><span class="p">(</span><span class="o">-</span><span class="mi">2</span><span class="p">,</span> <span class="mi">2</span><span class="p">)</span>
<span class="n">ax1</span><span class="o">.</span><span class="n">set_aspect</span><span class="p">(</span><span class="s">'equal'</span><span class="p">,</span> <span class="s">'datalim'</span><span class="p">)</span>
<span class="n">ax2</span><span class="o">.</span><span class="n">set_xlabel</span><span class="p">(</span><span class="s">'y'</span><span class="p">)</span>
<span class="n">ax2</span><span class="o">.</span><span class="n">set_ylabel</span><span class="p">(</span><span class="s">'z'</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line2</span> <span class="o">=</span> <span class="n">Line2D</span><span class="p">([],</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="bp">self</span><span class="o">.</span><span class="n">line2a</span> <span class="o">=</span> <span class="n">Line2D</span><span class="p">([],</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">linewidth</span><span class="o">=</span><span class="mi">2</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line2e</span> <span class="o">=</span> <span class="n">Line2D</span><span class="p">([],</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">marker</span><span class="o">=</span><span class="s">'o'</span><span class="p">,</span> <span class="n">markeredgecolor</span><span class="o">=</span><span class="s">'r'</span><span class="p">)</span>
<span class="n">ax2</span><span class="o">.</span><span class="n">add_line</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">line2</span><span class="p">)</span>
<span class="n">ax2</span><span class="o">.</span><span class="n">add_line</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">line2a</span><span class="p">)</span>
<span class="n">ax2</span><span class="o">.</span><span class="n">add_line</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">line2e</span><span class="p">)</span>
<span class="n">ax2</span><span class="o">.</span><span class="n">set_xlim</span><span class="p">(</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="n">ax2</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">800</span><span class="p">)</span>
<span class="n">ax3</span><span class="o">.</span><span class="n">set_xlabel</span><span class="p">(</span><span class="s">'x'</span><span class="p">)</span>
<span class="n">ax3</span><span class="o">.</span><span class="n">set_ylabel</span><span class="p">(</span><span class="s">'z'</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line3</span> <span class="o">=</span> <span class="n">Line2D</span><span class="p">([],</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="bp">self</span><span class="o">.</span><span class="n">line3a</span> <span class="o">=</span> <span class="n">Line2D</span><span class="p">([],</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">linewidth</span><span class="o">=</span><span class="mi">2</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line3e</span> <span class="o">=</span> <span class="n">Line2D</span><span class="p">([],</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">marker</span><span class="o">=</span><span class="s">'o'</span><span class="p">,</span> <span class="n">markeredgecolor</span><span class="o">=</span><span class="s">'r'</span><span class="p">)</span>
<span class="n">ax3</span><span class="o">.</span><span class="n">add_line</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">line3</span><span class="p">)</span>
<span class="n">ax3</span><span class="o">.</span><span class="n">add_line</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">line3a</span><span class="p">)</span>
<span class="n">ax3</span><span class="o">.</span><span class="n">add_line</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">line3e</span><span class="p">)</span>
<span class="n">ax3</span><span class="o">.</span><span class="n">set_xlim</span><span class="p">(</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="n">ax3</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">800</span><span class="p">)</span>
<span class="n">animation</span><span class="o">.</span><span class="n">TimedAnimation</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">fig</span><span class="p">,</span> <span class="n">interval</span><span class="o">=</span><span class="mi">50</span><span class="p">,</span> <span class="n">blit</span><span class="o">=</span><span class="bp">True</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">_draw_frame</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">framedata</span><span class="p">):</span>
<span class="n">i</span> <span class="o">=</span> <span class="n">framedata</span>
<span class="n">head</span> <span class="o">=</span> <span class="n">i</span> <span class="o">-</span> <span class="mi">1</span>
<span class="n">head_len</span> <span class="o">=</span> <span class="mi">10</span>
<span class="n">head_slice</span> <span class="o">=</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">t</span> <span class="o">></span> <span class="bp">self</span><span class="o">.</span><span class="n">t</span><span class="p">[</span><span class="n">i</span><span class="p">]</span> <span class="o">-</span> <span class="mf">1.0</span><span class="p">)</span> <span class="o">&</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">t</span> <span class="o"><</span> <span class="bp">self</span><span class="o">.</span><span class="n">t</span><span class="p">[</span><span class="n">i</span><span class="p">])</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line1</span><span class="o">.</span><span class="n">set_data</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">x</span><span class="p">[:</span><span class="n">i</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">y</span><span class="p">[:</span><span class="n">i</span><span class="p">])</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line1a</span><span class="o">.</span><span class="n">set_data</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">x</span><span class="p">[</span><span class="n">head_slice</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">y</span><span class="p">[</span><span class="n">head_slice</span><span class="p">])</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line1e</span><span class="o">.</span><span class="n">set_data</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">x</span><span class="p">[</span><span class="n">head</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">y</span><span class="p">[</span><span class="n">head</span><span class="p">])</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line2</span><span class="o">.</span><span class="n">set_data</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">y</span><span class="p">[:</span><span class="n">i</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">z</span><span class="p">[:</span><span class="n">i</span><span class="p">])</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line2a</span><span class="o">.</span><span class="n">set_data</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">y</span><span class="p">[</span><span class="n">head_slice</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">z</span><span class="p">[</span><span class="n">head_slice</span><span class="p">])</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line2e</span><span class="o">.</span><span class="n">set_data</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">y</span><span class="p">[</span><span class="n">head</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">z</span><span class="p">[</span><span class="n">head</span><span class="p">])</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line3</span><span class="o">.</span><span class="n">set_data</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">x</span><span class="p">[:</span><span class="n">i</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">z</span><span class="p">[:</span><span class="n">i</span><span class="p">])</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line3a</span><span class="o">.</span><span class="n">set_data</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">x</span><span class="p">[</span><span class="n">head_slice</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">z</span><span class="p">[</span><span class="n">head_slice</span><span class="p">])</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line3e</span><span class="o">.</span><span class="n">set_data</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">x</span><span class="p">[</span><span class="n">head</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">z</span><span class="p">[</span><span class="n">head</span><span class="p">])</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_drawn_artists</span> <span class="o">=</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">line1</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">line1a</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">line1e</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line2</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">line2a</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">line2e</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line3</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">line3a</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">line3e</span><span class="p">]</span>
<span class="k">def</span> <span class="nf">new_frame_seq</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">iter</span><span class="p">(</span><span class="nb">range</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">t</span><span class="o">.</span><span class="n">size</span><span class="p">))</span>
<span class="k">def</span> <span class="nf">_init_draw</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">lines</span> <span class="o">=</span> <span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">line1</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">line1a</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">line1e</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line2</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">line2a</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">line2e</span><span class="p">,</span>
<span class="bp">self</span><span class="o">.</span><span class="n">line3</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">line3a</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">line3e</span><span class="p">]</span>
<span class="k">for</span> <span class="n">l</span> <span class="ow">in</span> <span class="n">lines</span><span class="p">:</span>
<span class="n">l</span><span class="o">.</span><span class="n">set_data</span><span class="p">([],</span> <span class="p">[])</span>
<span class="n">ani</span> <span class="o">=</span> <span class="n">SubplotAnimation</span><span class="p">()</span>
<span class="c">#ani.save('test_sub.mp4')</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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