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<li><a class="reference internal" href="#">Developer’s tips for documenting matplotlib</a><ul>
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<div class="section" id="developer-s-tips-for-documenting-matplotlib">
<span id="documenting-matplotlib"></span><h1>Developer’s tips for documenting matplotlib<a class="headerlink" href="#developer-s-tips-for-documenting-matplotlib" title="Permalink to this headline">¶</a></h1>
<div class="section" id="getting-started">
<h2>Getting started<a class="headerlink" href="#getting-started" title="Permalink to this headline">¶</a></h2>
<div class="section" id="installing-dependencies">
<h3>Installing dependencies<a class="headerlink" href="#installing-dependencies" title="Permalink to this headline">¶</a></h3>
<p>The documentation for matplotlib is generated from reStructuredText using the
<a class="reference external" href="http://www.sphinx-doc.org">Sphinx</a> documentation generation tool. There are several extra requirements that
are needed to build the documentation. They are listed in the file
<a class="reference external" href="https://github.com/matplotlib/matplotlib/blob/master/doc-requirements.txt">doc-requirements.txt</a>
as well as listed below:</p>
<ol class="arabic simple">
<li>Sphinx-1.3 or later(Version 1.5.0 is not supported)</li>
<li>numpydoc 0.4 or later</li>
<li>IPython</li>
<li>Mock</li>
<li>colorspacious</li>
<li>pillow</li>
<li>graphviz</li>
</ol>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<ul class="last simple">
<li>You’ll need a minimal working LaTeX distribution for many examples to run.</li>
<li><a class="reference external" href="http://www.graphviz.org/Download.php">Graphviz</a> is not a python package, and needs
to be installed separately.</li>
</ul>
</div>
</div>
<div class="section" id="general-structure">
<h3>General structure<a class="headerlink" href="#general-structure" title="Permalink to this headline">¶</a></h3>
<p>All documentation is built from the <code class="file docutils literal"><span class="pre">doc/</span></code> directory. This directory contains both
<code class="docutils literal"><span class="pre">.rst</span></code> files that contain pages in the documentation, directories that contain more
<code class="docutils literal"><span class="pre">.rst</span></code> files, and configuration files for <a class="reference external" href="http://www.sphinx-doc.org">Sphinx</a>.</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">An exception to this are the directories <code class="file docutils literal"><span class="pre">gallery</span></code> and <code class="file docutils literal"><span class="pre">tutorials</span></code>, which
exist in the root directory. These contain Python files that are built by <a class="reference external" href="https://sphinx-gallery.readthedocs.io/en/latest/">Sphinx Gallery</a>.
When the docs are built, directories of the same name will be generated inside of <code class="file docutils literal"><span class="pre">docs/</span></code>.
The generated directories <code class="file docutils literal"><span class="pre">docs/gallery</span></code> and <code class="file docutils literal"><span class="pre">docs/tutorials</span></code> can be safely deleted.</p>
</div>
<p>The configuration file for Sphinx is <code class="file docutils literal"><span class="pre">doc/conf.py</span></code>. It controls which directories
Sphinx parses, how the docs are built, and how the extensions are used.</p>
</div>
<div class="section" id="building-the-docs">
<h3>Building the docs<a class="headerlink" href="#building-the-docs" title="Permalink to this headline">¶</a></h3>
<p>The documentation sources are found in the <code class="file docutils literal"><span class="pre">doc/</span></code> directory in
the trunk. To build the users guide in html format, cd into
<code class="file docutils literal"><span class="pre">doc/</span></code> and do:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">python</span> <span class="n">make</span><span class="o">.</span><span class="n">py</span> <span class="n">html</span>
</pre></div>
</div>
<p>or:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">./</span><span class="n">make</span><span class="o">.</span><span class="n">py</span> <span class="n">html</span>
</pre></div>
</div>
<p>There are many other flags you can pass to <code class="docutils literal"><span class="pre">make.py</span></code>, and you can see the
full list inside that file. Here are two useful ones:</p>
<ul class="simple">
<li><code class="docutils literal"><span class="pre">clean</span></code> will delete the built Sphinx files. Use this command if you’re getting strange
errors about missing paths or broken links, particularly if you move files around.</li>
<li><code class="docutils literal"><span class="pre">latex</span></code> builds a PDF of the documentation.</li>
</ul>
<p>In addition, these are useful flags:</p>
<ul class="simple">
<li><code class="docutils literal"><span class="pre">--help</span></code> will (among other things) display the allowed commands for <code class="docutils literal"><span class="pre">make.py</span></code>.</li>
<li><code class="docutils literal"><span class="pre">--allowsphinxwarnings</span></code> will allow the docs to continue building even if Sphinx
throws a warning. This is useful for debugging and spot-checking many warnings
at once.</li>
</ul>
</div>
</div>
<div class="section" id="organization-of-matplotlib-s-documentation">
<h2>Organization of matplotlib’s documentation<a class="headerlink" href="#organization-of-matplotlib-s-documentation" title="Permalink to this headline">¶</a></h2>
<p>The actual ReStructured Text files are kept in <code class="file docutils literal"><span class="pre">doc/users</span></code>,
<code class="file docutils literal"><span class="pre">doc/devel</span></code>, <code class="file docutils literal"><span class="pre">doc/api</span></code> and <code class="file docutils literal"><span class="pre">doc/faq</span></code>. The main entry point is
<code class="file docutils literal"><span class="pre">doc/index.rst</span></code>, which pulls in the <code class="file docutils literal"><span class="pre">index.rst</span></code> file for the users
guide, developers guide, api reference, and faqs. The documentation suite is
built as a single document in order to make the most effective use of cross
referencing, we want to make navigating the Matplotlib documentation as easy as
possible.</p>
<p>Additional files can be added to the various guides by including their base
file name (the .rst extension is not necessary) in the table of contents.
It is also possible to include other documents through the use of an include
statement, such as:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">include</span><span class="p">::</span> <span class="o">../../</span><span class="n">TODO</span>
</pre></div>
</div>
<div class="section" id="docstrings">
<h3>docstrings<a class="headerlink" href="#docstrings" title="Permalink to this headline">¶</a></h3>
<p>In addition to the “narrative” documentation described above,
matplotlib also defines its API reference documentation in docstrings.
For the most part, these are standard Python docstrings, but
matplotlib also includes some features to better support documenting
getters and setters.</p>
<p>Matplotlib uses artist introspection of docstrings to support
properties. All properties that you want to support through <code class="docutils literal"><span class="pre">setp</span></code>
and <code class="docutils literal"><span class="pre">getp</span></code> should have a <code class="docutils literal"><span class="pre">set_property</span></code> and <code class="docutils literal"><span class="pre">get_property</span></code>
method in the <a class="reference internal" href="../api/artist_api.html#matplotlib.artist.Artist" title="matplotlib.artist.Artist"><code class="xref py py-class docutils literal"><span class="pre">Artist</span></code></a> class. Yes, this is
not ideal given python properties or enthought traits, but it is a
historical legacy for now. The setter methods use the docstring with
the ACCEPTS token to indicate the type of argument the method accepts.
e.g., in <a class="reference internal" href="../api/_as_gen/matplotlib.lines.Line2D.html#matplotlib.lines.Line2D" title="matplotlib.lines.Line2D"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.lines.Line2D</span></code></a>:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="c1"># in lines.py</span>
<span class="k">def</span> <span class="nf">set_linestyle</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">linestyle</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Set the linestyle of the line</span>
<span class="sd"> ACCEPTS: [ '-' | '--' | '-.' | ':' | 'steps' | 'None' | ' ' | '' ]</span>
<span class="sd"> """</span>
</pre></div>
</div>
<p>Since matplotlib uses a lot of pass-through <code class="docutils literal"><span class="pre">kwargs</span></code>, e.g., in every
function that creates a line (<a class="reference internal" href="../api/_as_gen/matplotlib.pyplot.plot.html#matplotlib.pyplot.plot" title="matplotlib.pyplot.plot"><code class="xref py py-func docutils literal"><span class="pre">plot()</span></code></a>,
<a class="reference internal" href="../api/_as_gen/matplotlib.pyplot.semilogx.html#matplotlib.pyplot.semilogx" title="matplotlib.pyplot.semilogx"><code class="xref py py-func docutils literal"><span class="pre">semilogx()</span></code></a>,
<a class="reference internal" href="../api/_as_gen/matplotlib.pyplot.semilogy.html#matplotlib.pyplot.semilogy" title="matplotlib.pyplot.semilogy"><code class="xref py py-func docutils literal"><span class="pre">semilogy()</span></code></a>, etc…), it can be difficult for
the new user to know which <code class="docutils literal"><span class="pre">kwargs</span></code> are supported. Matplotlib uses
a docstring interpolation scheme to support documentation of every
function that takes a <code class="docutils literal"><span class="pre">**kwargs</span></code>. The requirements are:</p>
<ol class="arabic simple">
<li>single point of configuration so changes to the properties don’t
require multiple docstring edits.</li>
<li>as automated as possible so that as properties change, the docs
are updated automagically.</li>
</ol>
<p>The function <a class="reference internal" href="../api/_as_gen/matplotlib.artist.kwdoc.html#matplotlib.artist.kwdoc" title="matplotlib.artist.kwdoc"><code class="xref py py-func docutils literal"><span class="pre">matplotlib.artist.kwdoc()</span></code></a> and the decorator
<code class="xref py py-func docutils literal"><span class="pre">matplotlib.docstring.dedent_interpd()</span></code> facilitate this. They combine
python string interpolation in the docstring with the matplotlib
artist introspection facility that underlies <code class="docutils literal"><span class="pre">setp</span></code> and <code class="docutils literal"><span class="pre">getp</span></code>.
The <code class="docutils literal"><span class="pre">kwdoc</span></code> function gives the list of properties as a docstring. In order
to use this in another docstring, first update the
<code class="docutils literal"><span class="pre">matplotlib.docstring.interpd</span></code> object, as seen in this example from
<a class="reference internal" href="../api/lines_api.html#module-matplotlib.lines" title="matplotlib.lines"><code class="xref py py-mod docutils literal"><span class="pre">matplotlib.lines</span></code></a>:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="c1"># in lines.py</span>
<span class="n">docstring</span><span class="o">.</span><span class="n">interpd</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">Line2D</span><span class="o">=</span><span class="n">artist</span><span class="o">.</span><span class="n">kwdoc</span><span class="p">(</span><span class="n">Line2D</span><span class="p">))</span>
</pre></div>
</div>
<p>Then in any function accepting <a class="reference internal" href="../api/_as_gen/matplotlib.lines.Line2D.html#matplotlib.lines.Line2D" title="matplotlib.lines.Line2D"><code class="xref py py-class docutils literal"><span class="pre">Line2D</span></code></a>
pass-through <code class="docutils literal"><span class="pre">kwargs</span></code>, e.g., <a class="reference internal" href="../api/_as_gen/matplotlib.axes.Axes.plot.html#matplotlib.axes.Axes.plot" title="matplotlib.axes.Axes.plot"><code class="xref py py-meth docutils literal"><span class="pre">matplotlib.axes.Axes.plot()</span></code></a>:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="c1"># in axes.py</span>
<span class="nd">@docstring</span><span class="o">.</span><span class="n">dedent_interpd</span>
<span class="k">def</span> <span class="nf">plot</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Some stuff omitted</span>
<span class="sd"> The kwargs are Line2D properties:</span>
<span class="sd"> %(Line2D)s</span>
<span class="sd"> kwargs scalex and scaley, if defined, are passed on</span>
<span class="sd"> to autoscale_view to determine whether the x and y axes are</span>
<span class="sd"> autoscaled; default True. See Axes.autoscale_view for more</span>
<span class="sd"> information</span>
<span class="sd"> """</span>
<span class="k">pass</span>
</pre></div>
</div>
<p>Note there is a problem for <a class="reference internal" href="../api/artist_api.html#matplotlib.artist.Artist" title="matplotlib.artist.Artist"><code class="xref py py-class docutils literal"><span class="pre">Artist</span></code></a>
<code class="docutils literal"><span class="pre">__init__</span></code> methods, e.g., <code class="xref py py-meth docutils literal"><span class="pre">matplotlib.patches.Patch.__init__()</span></code>,
which supports <code class="docutils literal"><span class="pre">Patch</span></code> <code class="docutils literal"><span class="pre">kwargs</span></code>, since the artist inspector cannot
work until the class is fully defined and we can’t modify the
<code class="docutils literal"><span class="pre">Patch.__init__.__doc__</span></code> docstring outside the class definition.
There are some some manual hacks in this case, violating the
“single entry point” requirement above – see the
<code class="docutils literal"><span class="pre">docstring.interpd.update</span></code> calls in <a class="reference internal" href="../api/patches_api.html#module-matplotlib.patches" title="matplotlib.patches"><code class="xref py py-mod docutils literal"><span class="pre">matplotlib.patches</span></code></a>.</p>
</div>
</div>
<div class="section" id="formatting">
<span id="formatting-mpl-docs"></span><h2>Formatting<a class="headerlink" href="#formatting" title="Permalink to this headline">¶</a></h2>
<p>The Sphinx website contains plenty of <a class="reference external" href="http://www.sphinx-doc.org/contents.html">documentation</a> concerning ReST markup and
working with Sphinx in general. Here are a few additional things to keep in mind:</p>
<ul>
<li><p class="first">Please familiarize yourself with the Sphinx directives for <a class="reference external" href="http://www.sphinx-doc.org/markup/inline.html">inline
markup</a>. Matplotlib’s documentation makes heavy use of cross-referencing and
other semantic markup. For example, when referring to external files, use the
<code class="docutils literal"><span class="pre">:file:</span></code> directive.</p>
</li>
<li><p class="first">Function arguments and keywords should be referred to using the <em>emphasis</em>
role. This will keep matplotlib’s documentation consistent with Python’s
documentation:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">Here</span> <span class="ow">is</span> <span class="n">a</span> <span class="n">description</span> <span class="n">of</span> <span class="o">*</span><span class="n">argument</span><span class="o">*</span>
</pre></div>
</div>
<p>Please do not use the <code class="xref py py-obj docutils literal"><span class="pre">default</span> <span class="pre">role</span></code>:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span>Please do not describe `argument` like this.
</pre></div>
</div>
<p>nor the <code class="docutils literal"><span class="pre">literal</span></code> role:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span>Please do not describe ``argument`` like this.
</pre></div>
</div>
</li>
<li><p class="first">Sphinx does not support tables with column- or row-spanning cells for
latex output. Such tables can not be used when documenting matplotlib.</p>
</li>
<li><p class="first">Mathematical expressions can be rendered as png images in html, and in the
usual way by latex. For example:</p>
<p><code class="docutils literal"><span class="pre">:math:`\sin(x_n^2)`</span></code> yields: <img src="../_images/mathmpl/math-fa85ea0416.png" style="position: relative; bottom: -8px"/>, and:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">math</span><span class="p">::</span>
\<span class="n">int_</span><span class="p">{</span><span class="o">-</span>\<span class="n">infty</span><span class="p">}</span><span class="o">^</span><span class="p">{</span>\<span class="n">infty</span><span class="p">}</span>\<span class="n">frac</span><span class="p">{</span><span class="n">e</span><span class="o">^</span><span class="p">{</span><span class="n">i</span>\<span class="n">phi</span><span class="p">}}{</span><span class="mi">1</span><span class="o">+</span><span class="n">x</span><span class="o">^</span><span class="mi">2</span>\<span class="n">frac</span><span class="p">{</span><span class="n">e</span><span class="o">^</span><span class="p">{</span><span class="n">i</span>\<span class="n">phi</span><span class="p">}}{</span><span class="mi">1</span><span class="o">+</span><span class="n">x</span><span class="o">^</span><span class="mi">2</span><span class="p">}}</span>
</pre></div>
</div>
<p>yields:</p>
<img src="../_images/mathmpl/math-5b4e20db62.png" class="center" /></li>
<li><p class="first">Interactive IPython sessions can be illustrated in the documentation using
the following directive:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">sourcecode</span><span class="p">::</span> <span class="n">ipython</span>
<span class="n">In</span> <span class="p">[</span><span class="mi">69</span><span class="p">]:</span> <span class="n">lines</span> <span class="o">=</span> <span class="n">plot</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">3</span><span class="p">])</span>
</pre></div>
</div>
<p>which would yield:</p>
<div class="highlight-ipython"><div class="highlight"><pre><span></span><span class="gp">In [69]: </span><span class="n">lines</span> <span class="o">=</span> <span class="n">plot</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">3</span><span class="p">])</span>
</pre></div>
</div>
</li>
<li><p class="first">Footnotes <a class="footnote-reference" href="#id2" id="id1">[1]</a> can be added using <code class="docutils literal"><span class="pre">[#]_</span></code>, followed later by:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">rubric</span><span class="p">::</span> <span class="n">Footnotes</span>
<span class="o">..</span> <span class="p">[</span><span class="c1">#]</span>
</pre></div>
</div>
<p class="rubric">Footnotes</p>
<table class="docutils footnote" frame="void" id="id2" rules="none">
<colgroup><col class="label" /><col /></colgroup>
<tbody valign="top">
<tr><td class="label"><a class="fn-backref" href="#id1">[1]</a></td><td><p class="first last">For example.</p>
</td></tr>
</tbody>
</table>
</li>
<li><p class="first">Use the <em>note</em> and <em>warning</em> directives, sparingly, to draw attention to
important comments:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">note</span><span class="p">::</span>
<span class="n">Here</span> <span class="ow">is</span> <span class="n">a</span> <span class="n">note</span>
</pre></div>
</div>
<p>yields:</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">here is a note</p>
</div>
<p>also:</p>
<div class="admonition warning">
<p class="first admonition-title">Warning</p>
<p class="last">here is a warning</p>
</div>
</li>
<li><p class="first">Use the <em>deprecated</em> directive when appropriate:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">deprecated</span><span class="p">::</span> <span class="mf">0.98</span>
<span class="n">This</span> <span class="n">feature</span> <span class="ow">is</span> <span class="n">obsolete</span><span class="p">,</span> <span class="n">use</span> <span class="n">something</span> <span class="k">else</span><span class="o">.</span>
</pre></div>
</div>
<p>yields:</p>
<div class="deprecated">
<p><span class="versionmodified">Deprecated since version 0.98: </span>This feature is obsolete, use something else.</p>
</div>
</li>
<li><p class="first">Use the <em>versionadded</em> and <em>versionchanged</em> directives, which have similar
syntax to the <em>deprecated</em> role:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">versionadded</span><span class="p">::</span> <span class="mf">0.98</span>
<span class="n">The</span> <span class="n">transforms</span> <span class="n">have</span> <span class="n">been</span> <span class="n">completely</span> <span class="n">revamped</span><span class="o">.</span>
</pre></div>
</div>
<div class="versionadded">
<p><span class="versionmodified">New in version 0.98: </span>The transforms have been completely revamped.</p>
</div>
</li>
<li><p class="first">Use the <em>seealso</em> directive, for example:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span>.. seealso::
Using ReST :ref:`emacs-helpers`:
One example
A bit about :ref:`referring-to-mpl-docs`:
One more
</pre></div>
</div>
<p>yields:</p>
<div class="admonition seealso">
<p class="first admonition-title">See also</p>
<dl class="last docutils">
<dt>Using ResT <a class="reference internal" href="#emacs-helpers"><span class="std std-ref">Emacs helpers</span></a>:</dt>
<dd><p class="first last">One example</p>
</dd>
<dt>A bit about <a class="reference internal" href="#referring-to-mpl-docs"><span class="std std-ref">Referring to mpl documents</span></a>:</dt>
<dd><p class="first last">One more</p>
</dd>
</dl>
</div>
</li>
<li><p class="first">Please keep the <a class="reference internal" href="../glossary/index.html#glossary"><span class="std std-ref">Glossary</span></a> in mind when writing documentation. You can
create a references to a term in the glossary with the <code class="docutils literal"><span class="pre">:term:</span></code> role.</p>
</li>
<li><p class="first">The autodoc extension will handle index entries for the API, but additional
entries in the <a class="reference external" href="http://www.sphinx-doc.org/markup/para.html#index-generating-markup">index</a> need to be explicitly added.</p>
</li>
<li><p class="first">Please limit the text width of docstrings to 70 characters.</p>
</li>
<li><p class="first">Keyword arguments should be described using a definition list.</p>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">matplotlib makes extensive use of keyword arguments as pass-through
arguments, there are a many cases where a table is used in place of a
definition list for autogenerated sections of docstrings.</p>
</div>
</li>
</ul>
</div>
<div class="section" id="figures">
<h2>Figures<a class="headerlink" href="#figures" title="Permalink to this headline">¶</a></h2>
<div class="section" id="dynamically-generated-figures">
<h3>Dynamically generated figures<a class="headerlink" href="#dynamically-generated-figures" title="Permalink to this headline">¶</a></h3>
<p>Figures can be automatically generated from scripts and included in
the docs. It is not necessary to explicitly save the figure in the
script, this will be done automatically at build time to ensure that
the code that is included runs and produces the advertised figure.</p>
<p>The path should be relative to the <code class="docutils literal"><span class="pre">doc</span></code> directory. Any plots
specific to the documentation should be added to the <code class="docutils literal"><span class="pre">doc/mpl_examples/pyplots</span></code>
directory and committed to git. Plots from the <code class="docutils literal"><span class="pre">examples</span></code> directory
may be referenced through the symlink <code class="docutils literal"><span class="pre">mpl_examples</span></code> in the <code class="docutils literal"><span class="pre">doc</span></code>
directory. e.g.:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">plot</span><span class="p">::</span> <span class="n">mpl_examples</span><span class="o">/</span><span class="n">pylab_examples</span><span class="o">/</span><span class="n">simple_plot</span><span class="o">.</span><span class="n">py</span>
</pre></div>
</div>
<p>The <code class="docutils literal"><span class="pre">:scale:</span></code> directive rescales the image to some percentage of the
original size, though we don’t recommend using this in most cases
since it is probably better to choose the correct figure size and dpi
in mpl and let it handle the scaling.</p>
<div class="section" id="module-matplotlib.sphinxext.plot_directive">
<span id="plot-directive-documentation"></span><h4>Plot directive documentation<a class="headerlink" href="#module-matplotlib.sphinxext.plot_directive" title="Permalink to this headline">¶</a></h4>
<p>A directive for including a matplotlib plot in a Sphinx document.</p>
<p>By default, in HTML output, <code class="xref py py-obj docutils literal"><span class="pre">plot</span></code> will include a .png file with a
link to a high-res .png and .pdf. In LaTeX output, it will include a
.pdf.</p>
<p>The source code for the plot may be included in one of three ways:</p>
<blockquote>
<div><ol class="arabic">
<li><p class="first"><strong>A path to a source file</strong> as the argument to the directive:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">plot</span><span class="p">::</span> <span class="n">path</span><span class="o">/</span><span class="n">to</span><span class="o">/</span><span class="n">plot</span><span class="o">.</span><span class="n">py</span>
</pre></div>
</div>
<p>When a path to a source file is given, the content of the
directive may optionally contain a caption for the plot:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">plot</span><span class="p">::</span> <span class="n">path</span><span class="o">/</span><span class="n">to</span><span class="o">/</span><span class="n">plot</span><span class="o">.</span><span class="n">py</span>
<span class="n">This</span> <span class="ow">is</span> <span class="n">the</span> <span class="n">caption</span> <span class="k">for</span> <span class="n">the</span> <span class="n">plot</span>
</pre></div>
</div>
<p>Additionally, one may specify the name of a function to call (with
no arguments) immediately after importing the module:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">plot</span><span class="p">::</span> <span class="n">path</span><span class="o">/</span><span class="n">to</span><span class="o">/</span><span class="n">plot</span><span class="o">.</span><span class="n">py</span> <span class="n">plot_function1</span>
</pre></div>
</div>
</li>
<li><p class="first">Included as <strong>inline content</strong> to the directive:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">plot</span><span class="p">::</span>
<span class="kn">import</span> <span class="nn">matplotlib.pyplot</span> <span class="k">as</span> <span class="nn">plt</span>
<span class="kn">import</span> <span class="nn">matplotlib.image</span> <span class="k">as</span> <span class="nn">mpimg</span>
<span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
<span class="n">img</span> <span class="o">=</span> <span class="n">mpimg</span><span class="o">.</span><span class="n">imread</span><span class="p">(</span><span class="s1">'_static/stinkbug.png'</span><span class="p">)</span>
<span class="n">imgplot</span> <span class="o">=</span> <span class="n">plt</span><span class="o">.</span><span class="n">imshow</span><span class="p">(</span><span class="n">img</span><span class="p">)</span>
</pre></div>
</div>
</li>
<li><p class="first">Using <strong>doctest</strong> syntax:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">plot</span><span class="p">::</span>
<span class="n">A</span> <span class="n">plotting</span> <span class="n">example</span><span class="p">:</span>
<span class="o">>>></span> <span class="kn">import</span> <span class="nn">matplotlib.pyplot</span> <span class="k">as</span> <span class="nn">plt</span>
<span class="o">>>></span> <span class="n">plt</span><span class="o">.</span><span class="n">plot</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">3</span><span class="p">],</span> <span class="p">[</span><span class="mi">4</span><span class="p">,</span><span class="mi">5</span><span class="p">,</span><span class="mi">6</span><span class="p">])</span>
</pre></div>
</div>
</li>
</ol>
</div></blockquote>
<div class="section" id="options">
<h5>Options<a class="headerlink" href="#options" title="Permalink to this headline">¶</a></h5>
<p>The <code class="docutils literal"><span class="pre">plot</span></code> directive supports the following options:</p>
<blockquote>
<div><dl class="docutils">
<dt>format <span class="classifier-delimiter">:</span> <span class="classifier">{‘python’, ‘doctest’}</span></dt>
<dd>Specify the format of the input</dd>
<dt>include-source <span class="classifier-delimiter">:</span> <span class="classifier">bool</span></dt>
<dd>Whether to display the source code. The default can be changed
using the <code class="xref py py-obj docutils literal"><span class="pre">plot_include_source</span></code> variable in conf.py</dd>
<dt>encoding <span class="classifier-delimiter">:</span> <span class="classifier">str</span></dt>
<dd>If this source file is in a non-UTF8 or non-ASCII encoding,
the encoding must be specified using the <code class="xref py py-obj docutils literal"><span class="pre">:encoding:</span></code> option.
The encoding will not be inferred using the <code class="docutils literal"><span class="pre">-*-</span> <span class="pre">coding</span> <span class="pre">-*-</span></code>
metacomment.</dd>
<dt>context <span class="classifier-delimiter">:</span> <span class="classifier">bool or str</span></dt>
<dd>If provided, the code will be run in the context of all
previous plot directives for which the <code class="xref py py-obj docutils literal"><span class="pre">:context:</span></code> option was
specified. This only applies to inline code plot directives,
not those run from files. If the <code class="docutils literal"><span class="pre">:context:</span> <span class="pre">reset</span></code> option is
specified, the context is reset for this and future plots, and
previous figures are closed prior to running the code.
<code class="docutils literal"><span class="pre">:context:close-figs</span></code> keeps the context but closes previous figures
before running the code.</dd>
<dt>nofigs <span class="classifier-delimiter">:</span> <span class="classifier">bool</span></dt>
<dd>If specified, the code block will be run, but no figures will
be inserted. This is usually useful with the <code class="docutils literal"><span class="pre">:context:</span></code>
option.</dd>
</dl>
</div></blockquote>
<p>Additionally, this directive supports all of the options of the
<code class="xref py py-obj docutils literal"><span class="pre">image</span></code> directive, except for <code class="xref py py-obj docutils literal"><span class="pre">target</span></code> (since plot will add its own
target). These include <code class="xref py py-obj docutils literal"><span class="pre">alt</span></code>, <code class="xref py py-obj docutils literal"><span class="pre">height</span></code>, <code class="xref py py-obj docutils literal"><span class="pre">width</span></code>, <code class="xref py py-obj docutils literal"><span class="pre">scale</span></code>, <code class="xref py py-obj docutils literal"><span class="pre">align</span></code> and
<code class="xref py py-obj docutils literal"><span class="pre">class</span></code>.</p>
</div>
<div class="section" id="configuration-options">
<h5>Configuration options<a class="headerlink" href="#configuration-options" title="Permalink to this headline">¶</a></h5>
<p>The plot directive has the following configuration options:</p>
<blockquote>
<div><dl class="docutils">
<dt>plot_include_source</dt>
<dd>Default value for the include-source option</dd>
<dt>plot_html_show_source_link</dt>
<dd>Whether to show a link to the source in HTML.</dd>
<dt>plot_pre_code</dt>
<dd>Code that should be executed before each plot.</dd>
<dt>plot_basedir</dt>
<dd>Base directory, to which <code class="docutils literal"><span class="pre">plot::</span></code> file names are relative
to. (If None or empty, file names are relative to the
directory where the file containing the directive is.)</dd>
<dt>plot_formats</dt>
<dd><p class="first">File formats to generate. List of tuples or strings:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="p">[(</span><span class="n">suffix</span><span class="p">,</span> <span class="n">dpi</span><span class="p">),</span> <span class="n">suffix</span><span class="p">,</span> <span class="o">...</span><span class="p">]</span>
</pre></div>
</div>
<p class="last">that determine the file format and the DPI. For entries whose
DPI was omitted, sensible defaults are chosen. When passing from
the command line through sphinx_build the list should be passed as
suffix:dpi,suffix:dpi, ….</p>
</dd>
<dt>plot_html_show_formats</dt>
<dd>Whether to show links to the files in HTML.</dd>
<dt>plot_rcparams</dt>
<dd>A dictionary containing any non-standard rcParams that should
be applied before each plot.</dd>
<dt>plot_apply_rcparams</dt>
<dd>By default, rcParams are applied when <code class="xref py py-obj docutils literal"><span class="pre">context</span></code> option is not used in
a plot directive. This configuration option overrides this behavior
and applies rcParams before each plot.</dd>
<dt>plot_working_directory</dt>
<dd>By default, the working directory will be changed to the directory of
the example, so the code can get at its data files, if any. Also its
path will be added to <a class="reference external" href="https://docs.python.org/2/library/sys.html#sys.path" title="(in Python v2.7)"><code class="xref py py-obj docutils literal"><span class="pre">sys.path</span></code></a> so it can import any helper modules
sitting beside it. This configuration option can be used to specify
a central directory (also added to <a class="reference external" href="https://docs.python.org/2/library/sys.html#sys.path" title="(in Python v2.7)"><code class="xref py py-obj docutils literal"><span class="pre">sys.path</span></code></a>) where data files and
helper modules for all code are located.</dd>
<dt>plot_template</dt>
<dd>Provide a customized template for preparing restructured text.</dd>
</dl>
</div></blockquote>
<dl class="class">
<dt id="matplotlib.sphinxext.plot_directive.ImageFile">
<em class="property">class </em><code class="descclassname">matplotlib.sphinxext.plot_directive.</code><code class="descname">ImageFile</code><span class="sig-paren">(</span><em>basename</em>, <em>dirname</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.ImageFile" title="Permalink to this definition">¶</a></dt>
<dd><dl class="method">
<dt id="matplotlib.sphinxext.plot_directive.ImageFile.filename">
<code class="descname">filename</code><span class="sig-paren">(</span><em>format</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.ImageFile.filename" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="matplotlib.sphinxext.plot_directive.ImageFile.filenames">
<code class="descname">filenames</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.ImageFile.filenames" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="exception">
<dt id="matplotlib.sphinxext.plot_directive.PlotError">
<em class="property">exception </em><code class="descclassname">matplotlib.sphinxext.plot_directive.</code><code class="descname">PlotError</code><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.PlotError" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="function">
<dt id="matplotlib.sphinxext.plot_directive.clear_state">
<code class="descclassname">matplotlib.sphinxext.plot_directive.</code><code class="descname">clear_state</code><span class="sig-paren">(</span><em>plot_rcparams</em>, <em>close=True</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.clear_state" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="function">
<dt id="matplotlib.sphinxext.plot_directive.contains_doctest">
<code class="descclassname">matplotlib.sphinxext.plot_directive.</code><code class="descname">contains_doctest</code><span class="sig-paren">(</span><em>text</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.contains_doctest" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="function">
<dt id="matplotlib.sphinxext.plot_directive.format_template">
<code class="descclassname">matplotlib.sphinxext.plot_directive.</code><code class="descname">format_template</code><span class="sig-paren">(</span><em>template</em>, <em>**kw</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.format_template" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="function">
<dt id="matplotlib.sphinxext.plot_directive.get_plot_formats">
<code class="descclassname">matplotlib.sphinxext.plot_directive.</code><code class="descname">get_plot_formats</code><span class="sig-paren">(</span><em>config</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.get_plot_formats" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="function">
<dt id="matplotlib.sphinxext.plot_directive.mark_plot_labels">
<code class="descclassname">matplotlib.sphinxext.plot_directive.</code><code class="descname">mark_plot_labels</code><span class="sig-paren">(</span><em>app</em>, <em>document</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.mark_plot_labels" title="Permalink to this definition">¶</a></dt>
<dd><p>To make plots referenceable, we need to move the reference from
the “htmlonly” (or “latexonly”) node to the actual figure node
itself.</p>
</dd></dl>
<dl class="function">
<dt id="matplotlib.sphinxext.plot_directive.out_of_date">
<code class="descclassname">matplotlib.sphinxext.plot_directive.</code><code class="descname">out_of_date</code><span class="sig-paren">(</span><em>original</em>, <em>derived</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.out_of_date" title="Permalink to this definition">¶</a></dt>
<dd><p>Returns True if derivative is out-of-date wrt original,
both of which are full file paths.</p>
</dd></dl>
<dl class="function">
<dt id="matplotlib.sphinxext.plot_directive.plot_directive">
<code class="descclassname">matplotlib.sphinxext.plot_directive.</code><code class="descname">plot_directive</code><span class="sig-paren">(</span><em>name</em>, <em>arguments</em>, <em>options</em>, <em>content</em>, <em>lineno</em>, <em>content_offset</em>, <em>block_text</em>, <em>state</em>, <em>state_machine</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.plot_directive" title="Permalink to this definition">¶</a></dt>
<dd><p>A directive for including a matplotlib plot in a Sphinx document.</p>
<p>By default, in HTML output, <code class="xref py py-obj docutils literal"><span class="pre">plot</span></code> will include a .png file with a
link to a high-res .png and .pdf. In LaTeX output, it will include a
.pdf.</p>
<p>The source code for the plot may be included in one of three ways:</p>
<blockquote>
<div><ol class="arabic">
<li><p class="first"><strong>A path to a source file</strong> as the argument to the directive:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">plot</span><span class="p">::</span> <span class="n">path</span><span class="o">/</span><span class="n">to</span><span class="o">/</span><span class="n">plot</span><span class="o">.</span><span class="n">py</span>
</pre></div>
</div>
<p>When a path to a source file is given, the content of the
directive may optionally contain a caption for the plot:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">plot</span><span class="p">::</span> <span class="n">path</span><span class="o">/</span><span class="n">to</span><span class="o">/</span><span class="n">plot</span><span class="o">.</span><span class="n">py</span>
<span class="n">This</span> <span class="ow">is</span> <span class="n">the</span> <span class="n">caption</span> <span class="k">for</span> <span class="n">the</span> <span class="n">plot</span>
</pre></div>
</div>
<p>Additionally, one may specify the name of a function to call (with
no arguments) immediately after importing the module:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">plot</span><span class="p">::</span> <span class="n">path</span><span class="o">/</span><span class="n">to</span><span class="o">/</span><span class="n">plot</span><span class="o">.</span><span class="n">py</span> <span class="n">plot_function1</span>
</pre></div>
</div>
</li>
<li><p class="first">Included as <strong>inline content</strong> to the directive:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">plot</span><span class="p">::</span>
<span class="kn">import</span> <span class="nn">matplotlib.pyplot</span> <span class="k">as</span> <span class="nn">plt</span>
<span class="kn">import</span> <span class="nn">matplotlib.image</span> <span class="k">as</span> <span class="nn">mpimg</span>
<span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
<span class="n">img</span> <span class="o">=</span> <span class="n">mpimg</span><span class="o">.</span><span class="n">imread</span><span class="p">(</span><span class="s1">'_static/stinkbug.png'</span><span class="p">)</span>
<span class="n">imgplot</span> <span class="o">=</span> <span class="n">plt</span><span class="o">.</span><span class="n">imshow</span><span class="p">(</span><span class="n">img</span><span class="p">)</span>
</pre></div>
</div>
</li>
<li><p class="first">Using <strong>doctest</strong> syntax:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">plot</span><span class="p">::</span>
<span class="n">A</span> <span class="n">plotting</span> <span class="n">example</span><span class="p">:</span>
<span class="o">>>></span> <span class="kn">import</span> <span class="nn">matplotlib.pyplot</span> <span class="k">as</span> <span class="nn">plt</span>
<span class="o">>>></span> <span class="n">plt</span><span class="o">.</span><span class="n">plot</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">3</span><span class="p">],</span> <span class="p">[</span><span class="mi">4</span><span class="p">,</span><span class="mi">5</span><span class="p">,</span><span class="mi">6</span><span class="p">])</span>
</pre></div>
</div>
</li>
</ol>
</div></blockquote>
</dd></dl>
<dl class="function">
<dt id="matplotlib.sphinxext.plot_directive.remove_coding">
<code class="descclassname">matplotlib.sphinxext.plot_directive.</code><code class="descname">remove_coding</code><span class="sig-paren">(</span><em>text</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.remove_coding" title="Permalink to this definition">¶</a></dt>
<dd><p>Remove the coding comment, which six.exec_ doesn’t like.</p>
</dd></dl>
<dl class="function">
<dt id="matplotlib.sphinxext.plot_directive.render_figures">
<code class="descclassname">matplotlib.sphinxext.plot_directive.</code><code class="descname">render_figures</code><span class="sig-paren">(</span><em>code</em>, <em>code_path</em>, <em>output_dir</em>, <em>output_base</em>, <em>context</em>, <em>function_name</em>, <em>config</em>, <em>context_reset=False</em>, <em>close_figs=False</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.render_figures" title="Permalink to this definition">¶</a></dt>
<dd><p>Run a pyplot script and save the images in <em>output_dir</em>.</p>
<p>Save the images under <em>output_dir</em> with file names derived from
<em>output_base</em></p>
</dd></dl>
<dl class="function">
<dt id="matplotlib.sphinxext.plot_directive.run">
<code class="descclassname">matplotlib.sphinxext.plot_directive.</code><code class="descname">run</code><span class="sig-paren">(</span><em>arguments</em>, <em>content</em>, <em>options</em>, <em>state_machine</em>, <em>state</em>, <em>lineno</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.run" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="function">
<dt id="matplotlib.sphinxext.plot_directive.run_code">
<code class="descclassname">matplotlib.sphinxext.plot_directive.</code><code class="descname">run_code</code><span class="sig-paren">(</span><em>code</em>, <em>code_path</em>, <em>ns=None</em>, <em>function_name=None</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.run_code" title="Permalink to this definition">¶</a></dt>
<dd><p>Import a Python module from a path, and run the function given by
name, if function_name is not None.</p>
</dd></dl>
<dl class="function">
<dt id="matplotlib.sphinxext.plot_directive.setup">
<code class="descclassname">matplotlib.sphinxext.plot_directive.</code><code class="descname">setup</code><span class="sig-paren">(</span><em>app</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.setup" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="function">
<dt id="matplotlib.sphinxext.plot_directive.split_code_at_show">
<code class="descclassname">matplotlib.sphinxext.plot_directive.</code><code class="descname">split_code_at_show</code><span class="sig-paren">(</span><em>text</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.split_code_at_show" title="Permalink to this definition">¶</a></dt>
<dd><p>Split code at plt.show()</p>
</dd></dl>
<dl class="function">
<dt id="matplotlib.sphinxext.plot_directive.unescape_doctest">
<code class="descclassname">matplotlib.sphinxext.plot_directive.</code><code class="descname">unescape_doctest</code><span class="sig-paren">(</span><em>text</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.sphinxext.plot_directive.unescape_doctest" title="Permalink to this definition">¶</a></dt>
<dd><p>Extract code from a piece of text, which contains either Python code
or doctests.</p>
</dd></dl>
</div>
</div>
</div>
<div class="section" id="static-figures">
<h3>Static figures<a class="headerlink" href="#static-figures" title="Permalink to this headline">¶</a></h3>
<p>Any figures that rely on optional system configurations need to be handled a
little differently. These figures are not to be generated during the
documentation build, in order to keep the prerequisites to the documentation
effort as low as possible. Please run the <code class="file docutils literal"><span class="pre">doc/pyplots/make.py</span></code> script
when adding such figures, and commit the script <strong>and</strong> the images to
git. Please also add a line to the README in doc/pyplots for any additional
requirements necessary to generate a new figure. Once these steps have been
taken, these figures can be included in the usual way:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">plot</span><span class="p">::</span> <span class="n">mpl_examples</span><span class="o">/</span><span class="n">text_labels_and_annotations</span><span class="o">/</span><span class="n">tex_demo</span><span class="o">.</span><span class="n">py</span>
<span class="p">:</span><span class="n">include</span><span class="o">-</span><span class="n">source</span><span class="p">:</span>
</pre></div>
</div>
</div>
<div class="section" id="examples">
<h3>Examples<a class="headerlink" href="#examples" title="Permalink to this headline">¶</a></h3>
<p>The source of the files in the <code class="docutils literal"><span class="pre">examples</span></code> directory are
automatically included in the HTML docs. An image is generated and
included for all examples in the <code class="docutils literal"><span class="pre">api</span></code> and <code class="docutils literal"><span class="pre">pylab_examples</span></code>
directories. To exclude the example from having an image rendered,
insert the following special comment anywhere in the script:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="c1"># -*- noplot -*-</span>
</pre></div>
</div>
</div>
<div class="section" id="animations">
<h3>Animations<a class="headerlink" href="#animations" title="Permalink to this headline">¶</a></h3>
<p>We have a matplotlib google/gmail account with username <code class="docutils literal"><span class="pre">mplgithub</span></code>
which we used to setup the github account but can be used for other
purposes, like hosting google docs or youtube videos. You can embed a
matplotlib animation in the docs by first saving the animation as a
movie using <a class="reference internal" href="../api/_as_gen/matplotlib.animation.Animation.html#matplotlib.animation.Animation.save" title="matplotlib.animation.Animation.save"><code class="xref py py-meth docutils literal"><span class="pre">matplotlib.animation.Animation.save()</span></code></a>, and then
uploading to <a class="reference external" href="https://www.youtube.com/user/matplotlib">matplotlib’s youtube
channel</a> and inserting the
embedding string youtube provides like:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">raw</span><span class="p">::</span> <span class="n">html</span>
<span class="o"><</span><span class="n">iframe</span> <span class="n">width</span><span class="o">=</span><span class="s2">"420"</span> <span class="n">height</span><span class="o">=</span><span class="s2">"315"</span>
<span class="n">src</span><span class="o">=</span><span class="s2">"http://www.youtube.com/embed/32cjc6V0OZY"</span>
<span class="n">frameborder</span><span class="o">=</span><span class="s2">"0"</span> <span class="n">allowfullscreen</span><span class="o">></span>
<span class="o"></</span><span class="n">iframe</span><span class="o">></span>
</pre></div>
</div>
<p>An example save command to generate a movie looks like this</p>
<div class="highlight-python"><div class="highlight"><pre><span></span><span class="n">ani</span> <span class="o">=</span> <span class="n">animation</span><span class="o">.</span><span class="n">FuncAnimation</span><span class="p">(</span><span class="n">fig</span><span class="p">,</span> <span class="n">animate</span><span class="p">,</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="n">y</span><span class="p">)),</span>
<span class="n">interval</span><span class="o">=</span><span class="mi">25</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="n">init_func</span><span class="o">=</span><span class="n">init</span><span class="p">)</span>
<span class="n">ani</span><span class="o">.</span><span class="n">save</span><span class="p">(</span><span class="s1">'double_pendulum.mp4'</span><span class="p">,</span> <span class="n">fps</span><span class="o">=</span><span class="mi">15</span><span class="p">)</span>
</pre></div>
</div>
<p>Contact Michael Droettboom for the login password to upload youtube videos of
google docs to the mplgithub account.</p>
</div>
</div>
<div class="section" id="referring-to-mpl-documents">
<span id="referring-to-mpl-docs"></span><h2>Referring to mpl documents<a class="headerlink" href="#referring-to-mpl-documents" title="Permalink to this headline">¶</a></h2>
<p>In the documentation, you may want to include to a document in the
matplotlib src, e.g., a license file or an image file from <code class="xref py py-obj docutils literal"><span class="pre">mpl-data</span></code>,
refer to it via a relative path from the document where the rst file
resides, e.g., in <code class="file docutils literal"><span class="pre">users/navigation_toolbar.rst</span></code>, we refer to the
image icons with:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">image</span><span class="p">::</span> <span class="o">../../</span><span class="n">lib</span><span class="o">/</span><span class="n">matplotlib</span><span class="o">/</span><span class="n">mpl</span><span class="o">-</span><span class="n">data</span><span class="o">/</span><span class="n">images</span><span class="o">/</span><span class="n">subplots</span><span class="o">.</span><span class="n">png</span>
</pre></div>
</div>
<p>In the <code class="xref py py-obj docutils literal"><span class="pre">users</span></code> subdirectory, if I want to refer to a file in the mpl-data
directory, I use the symlink directory. For example, from
<code class="xref py py-obj docutils literal"><span class="pre">customizing.rst</span></code>:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">literalinclude</span><span class="p">::</span> <span class="o">../../</span><span class="n">lib</span><span class="o">/</span><span class="n">matplotlib</span><span class="o">/</span><span class="n">mpl</span><span class="o">-</span><span class="n">data</span><span class="o">/</span><span class="n">matplotlibrc</span>
</pre></div>
</div>
<p>One exception to this is when referring to the examples dir. Relative
paths are extremely confusing in the sphinx plot extensions, so
without getting into the dirty details, it is easier to simply include
a symlink to the files at the top doc level directory. This way, API
documents like <a class="reference internal" href="../api/_as_gen/matplotlib.pyplot.plot.html#matplotlib.pyplot.plot" title="matplotlib.pyplot.plot"><code class="xref py py-meth docutils literal"><span class="pre">matplotlib.pyplot.plot()</span></code></a> can refer to the
examples in a known location.</p>
<p>In the top level doc directory we have symlinks pointing to
the mpl <code class="xref py py-obj docutils literal"><span class="pre">examples</span></code>:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">home</span><span class="p">:</span><span class="o">~/</span><span class="n">mpl</span><span class="o">/</span><span class="n">doc</span><span class="o">></span> <span class="n">ls</span> <span class="o">-</span><span class="n">l</span> <span class="n">mpl_</span><span class="o">*</span>
<span class="n">mpl_examples</span> <span class="o">-></span> <span class="o">../</span><span class="n">examples</span>
</pre></div>
</div>
<p>So we can include plots from the examples dir using the symlink:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">plot</span><span class="p">::</span> <span class="n">mpl_examples</span><span class="o">/</span><span class="n">pylab_examples</span><span class="o">/</span><span class="n">simple_plot</span><span class="o">.</span><span class="n">py</span>
</pre></div>
</div>
<p>We used to use a symlink for <code class="file docutils literal"><span class="pre">mpl-data</span></code> too, but the distro
becomes very large on platforms that do not support links (e.g., the font
files are duplicated and large)</p>
</div>
<div class="section" id="internal-section-references">
<span id="internal-section-refs"></span><h2>Internal section references<a class="headerlink" href="#internal-section-references" title="Permalink to this headline">¶</a></h2>
<p>To maximize internal consistency in section labeling and references,
use hyphen separated, descriptive labels for section references, e.g.,:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">_howto</span><span class="o">-</span><span class="n">webapp</span><span class="p">:</span>
</pre></div>
</div>
<p>and refer to it using the standard reference syntax:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span>See :ref:`howto-webapp`
</pre></div>
</div>
<p>Keep in mind that we may want to reorganize the contents later, so
let’s avoid top level names in references like <code class="docutils literal"><span class="pre">user</span></code> or <code class="docutils literal"><span class="pre">devel</span></code>
or <code class="docutils literal"><span class="pre">faq</span></code> unless necessary, because for example the FAQ “what is a
backend?” could later become part of the users guide, so the label:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">_what</span><span class="o">-</span><span class="ow">is</span><span class="o">-</span><span class="n">a</span><span class="o">-</span><span class="n">backend</span>
</pre></div>
</div>
<p>is better than:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">_faq</span><span class="o">-</span><span class="n">backend</span>
</pre></div>
</div>
<p>In addition, since underscores are widely used by Sphinx itself, let’s prefer
hyphens to separate words.</p>
</div>
<div class="section" id="section-names-etc">
<h2>Section names, etc<a class="headerlink" href="#section-names-etc" title="Permalink to this headline">¶</a></h2>
<p>For everything but top level chapters, please use <code class="docutils literal"><span class="pre">Upper</span> <span class="pre">lower</span></code> for
section titles, e.g., <code class="docutils literal"><span class="pre">Possible</span> <span class="pre">hangups</span></code> rather than <code class="docutils literal"><span class="pre">Possible</span>
<span class="pre">Hangups</span></code></p>
</div>
<div class="section" id="inheritance-diagrams">
<h2>Inheritance diagrams<a class="headerlink" href="#inheritance-diagrams" title="Permalink to this headline">¶</a></h2>
<p>Class inheritance diagrams can be generated with the
<code class="docutils literal"><span class="pre">inheritance-diagram</span></code> directive. To use it, you provide the
directive with a number of class or module names (separated by
whitespace). If a module name is provided, all classes in that module
will be used. All of the ancestors of these classes will be included
in the inheritance diagram.</p>
<p>A single option is available: <em>parts</em> controls how many of parts in
the path to the class are shown. For example, if <em>parts</em> == 1, the
class <code class="docutils literal"><span class="pre">matplotlib.patches.Patch</span></code> is shown as <code class="docutils literal"><span class="pre">Patch</span></code>. If <em>parts</em>
== 2, it is shown as <code class="docutils literal"><span class="pre">patches.Patch</span></code>. If <em>parts</em> == 0, the full
path is shown.</p>
<p>Example:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="o">..</span> <span class="n">inheritance</span><span class="o">-</span><span class="n">diagram</span><span class="p">::</span> <span class="n">matplotlib</span><span class="o">.</span><span class="n">patches</span> <span class="n">matplotlib</span><span class="o">.</span><span class="n">lines</span> <span class="n">matplotlib</span><span class="o">.</span><span class="n">text</span>
<span class="p">:</span><span class="n">parts</span><span class="p">:</span> <span class="mi">2</span>
</pre></div>
</div>
<img src="../_images/inheritance-dedcc1c71ae54be773d8e45d7e30897709db8581.png" alt="Inheritance diagram of matplotlib.patches, matplotlib.lines, matplotlib.text" usemap="#inheritance03ab0131b5" class="inheritance"/>
<map id="inheritance03ab0131b5" name="inheritance03ab0131b5">
<area shape="rect" id="node1" href="../api/artist_api.html#matplotlib.artist.Artist" target="_top" title="Abstract base class for someone who renders into a" alt="" coords="46,282,135,305"/>
<area shape="rect" id="node2" href="../api/_as_gen/matplotlib.lines.Line2D.html#matplotlib.lines.Line2D" target="_top" title="A line - the line can have both a solid linestyle connecting all" alt="" coords="225,236,321,259"/>
<area shape="rect" id="node7" href="../api/_as_gen/matplotlib.patches.Patch.html#matplotlib.patches.Patch" target="_top" title="A patch is a 2D artist with a face color and an edge color." alt="" coords="221,282,325,305"/>
<area shape="rect" id="node25" href="../api/text_api.html#matplotlib.text.Text" target="_top" title="Handle storing and drawing of text in window or data coordinates." alt="" coords="236,535,310,559"/>
<area shape="rect" id="node3" href="../api/_as_gen/matplotlib.lines.VertexSelector.html#matplotlib.lines.VertexSelector" target="_top" title="Manage the callbacks to maintain a list of selected vertices for" alt="" coords="19,236,161,259"/>
<area shape="rect" id="node4" href="../api/_as_gen/matplotlib.patches.Arc.html#matplotlib.patches.Arc" target="_top" title="An elliptical arc.  Because it performs various optimizations, it" alt="" coords="630,5,722,29"/>
<area shape="rect" id="node5" href="../api/_as_gen/matplotlib.patches.Ellipse.html#matplotlib.patches.Ellipse" target="_top" title="A scale-free ellipse." alt="" coords="401,27,514,51"/>
<area shape="rect" id="node10" href="../api/_as_gen/matplotlib.patches.Circle.html#matplotlib.patches.Circle" target="_top" title="A circle patch." alt="" coords="623,51,730,75"/>
<area shape="rect" id="node6" href="../api/_as_gen/matplotlib.patches.Arrow.html#matplotlib.patches.Arrow" target="_top" title="An arrow patch." alt="" coords="404,74,511,97"/>
<area shape="rect" id="node12" href="../api/_as_gen/matplotlib.patches.RegularPolygon.html#matplotlib.patches.RegularPolygon" target="_top" title="A regular polygon patch." alt="" coords="374,120,541,143"/>
<area shape="rect" id="node14" href="../api/_as_gen/matplotlib.patches.FancyArrowPatch.html#matplotlib.patches.FancyArrowPatch" target="_top" title="A fancy arrow patch. It draws an arrow using the :class:`ArrowStyle`." alt="" coords="370,166,545,190"/>
<area shape="rect" id="node17" href="../api/_as_gen/matplotlib.patches.Polygon.html#matplotlib.patches.Polygon" target="_top" title="A general polygon patch." alt="" coords="397,212,518,236"/>
<area shape="rect" id="node18" href="../api/_as_gen/matplotlib.patches.FancyBboxPatch.html#matplotlib.patches.FancyBboxPatch" target="_top" title="Draw a fancy box around a rectangle with lower left at *xy*=(*x*," alt="" coords="372,258,543,282"/>
<area shape="rect" id="node19" href="../api/_as_gen/matplotlib.patches.PathPatch.html#matplotlib.patches.PathPatch" target="_top" title="A general polycurve path patch." alt="" coords="392,304,523,328"/>
<area shape="rect" id="node20" href="../api/_as_gen/matplotlib.patches.Rectangle.html#matplotlib.patches.Rectangle" target="_top" title="Draw a rectangle with lower left at *xy* = (*x*, *y*) with" alt="" coords="391,350,524,374"/>
<area shape="rect" id="node21" href="../api/_as_gen/matplotlib.patches.Shadow.html#matplotlib.patches.Shadow" target="_top" title="patches.Shadow" alt="" coords="398,396,517,420"/>
<area shape="rect" id="node22" href="../api/_as_gen/matplotlib.patches.Wedge.html#matplotlib.patches.Wedge" target="_top" title="Wedge shaped patch." alt="" coords="401,443,514,466"/>
<area shape="rect" id="node23" href="../api/_as_gen/matplotlib.patches.YAArrow.html#matplotlib.patches.YAArrow" target="_top" title="Yet another arrow class." alt="" coords="396,489,519,512"/>
<area shape="rect" id="node8" href="../api/_as_gen/matplotlib.patches.ArrowStyle.html#matplotlib.patches.ArrowStyle" target="_top" title=":class:`ArrowStyle` is a container class which defines several" alt="" coords="21,190,160,213"/>
<area shape="rect" id="node9" href="../api/_as_gen/matplotlib.patches.BoxStyle.html#matplotlib.patches.BoxStyle" target="_top" title=":class:`BoxStyle` is a container class which defines several" alt="" coords="27,143,153,167"/>
<area shape="rect" id="node11" href="../api/_as_gen/matplotlib.patches.CirclePolygon.html#matplotlib.patches.CirclePolygon" target="_top" title="A polygon-approximation of a circle patch." alt="" coords="598,120,754,143"/>
<area shape="rect" id="node13" href="../api/_as_gen/matplotlib.patches.ConnectionPatch.html#matplotlib.patches.ConnectionPatch" target="_top" title="A :class:`~matplotlib.patches.ConnectionPatch` class is to make" alt="" coords="590,166,763,190"/>
<area shape="rect" id="node15" href="../api/_as_gen/matplotlib.patches.ConnectionStyle.html#matplotlib.patches.ConnectionStyle" target="_top" title=":class:`ConnectionStyle` is a container class which defines" alt="" coords="5,97,176,121"/>
<area shape="rect" id="node16" href="../api/_as_gen/matplotlib.patches.FancyArrow.html#matplotlib.patches.FancyArrow" target="_top" title="Like Arrow, but lets you set head width and head height independently." alt="" coords="605,212,747,236"/>
<area shape="rect" id="node24" href="../api/text_api.html#matplotlib.text.Annotation" target="_top" title="text.Annotation" alt="" coords="400,535,515,559"/>
<area shape="rect" id="node27" href="../api/text_api.html#matplotlib.text.TextWithDash" target="_top" title="This is basically a :class:`~matplotlib.text.Text` with a dash" alt="" coords="391,581,524,605"/>
<area shape="rect" id="node26" href="../api/text_api.html#matplotlib.text.OffsetFrom" target="_top" title="Callable helper class for working with `Annotation`" alt="" coords="33,51,148,75"/>
</map>
</div>
<div class="section" id="emacs-helpers">
<span id="id3"></span><h2>Emacs helpers<a class="headerlink" href="#emacs-helpers" title="Permalink to this headline">¶</a></h2>
<p>There is an emacs mode <a class="reference external" href="http://docutils.sourceforge.net/tools/editors/emacs/rst.el">rst.el</a> which
automates many important ReST tasks like building and updating
table-of-contents, and promoting or demoting section headings. Here
is the basic <code class="docutils literal"><span class="pre">.emacs</span></code> configuration:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="p">(</span><span class="n">require</span> <span class="s1">'rst)</span>
<span class="p">(</span><span class="n">setq</span> <span class="n">auto</span><span class="o">-</span><span class="n">mode</span><span class="o">-</span><span class="n">alist</span>
<span class="p">(</span><span class="n">append</span> <span class="s1">'(("</span><span class="se">\\</span><span class="s1">.txt$" . rst-mode)</span>
<span class="p">(</span><span class="s2">"</span><span class="se">\\</span><span class="s2">.rst$"</span> <span class="o">.</span> <span class="n">rst</span><span class="o">-</span><span class="n">mode</span><span class="p">)</span>
<span class="p">(</span><span class="s2">"</span><span class="se">\\</span><span class="s2">.rest$"</span> <span class="o">.</span> <span class="n">rst</span><span class="o">-</span><span class="n">mode</span><span class="p">))</span> <span class="n">auto</span><span class="o">-</span><span class="n">mode</span><span class="o">-</span><span class="n">alist</span><span class="p">))</span>
</pre></div>
</div>
<p>Some helpful functions:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">C</span><span class="o">-</span><span class="n">c</span> <span class="n">TAB</span> <span class="o">-</span> <span class="n">rst</span><span class="o">-</span><span class="n">toc</span><span class="o">-</span><span class="n">insert</span>
<span class="n">Insert</span> <span class="n">table</span> <span class="n">of</span> <span class="n">contents</span> <span class="n">at</span> <span class="n">point</span>
<span class="n">C</span><span class="o">-</span><span class="n">c</span> <span class="n">C</span><span class="o">-</span><span class="n">u</span> <span class="o">-</span> <span class="n">rst</span><span class="o">-</span><span class="n">toc</span><span class="o">-</span><span class="n">update</span>
<span class="n">Update</span> <span class="n">the</span> <span class="n">table</span> <span class="n">of</span> <span class="n">contents</span> <span class="n">at</span> <span class="n">point</span>
<span class="n">C</span><span class="o">-</span><span class="n">c</span> <span class="n">C</span><span class="o">-</span><span class="n">l</span> <span class="n">rst</span><span class="o">-</span><span class="n">shift</span><span class="o">-</span><span class="n">region</span><span class="o">-</span><span class="n">left</span>
<span class="n">Shift</span> <span class="n">region</span> <span class="n">to</span> <span class="n">the</span> <span class="n">left</span>
<span class="n">C</span><span class="o">-</span><span class="n">c</span> <span class="n">C</span><span class="o">-</span><span class="n">r</span> <span class="n">rst</span><span class="o">-</span><span class="n">shift</span><span class="o">-</span><span class="n">region</span><span class="o">-</span><span class="n">right</span>
<span class="n">Shift</span> <span class="n">region</span> <span class="n">to</span> <span class="n">the</span> <span class="n">right</span>
</pre></div>
</div>
</div>
</div>
</div>
</div>
</div>
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Last updated on Oct 13, 2017.
Created using <a
href="http://sphinx-doc.org/">Sphinx</a> 1.6.3.
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