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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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<div class="section" id="mathtext">
<h1>mathtext<a class="headerlink" href="#mathtext" title="Permalink to this headline">¶</a></h1>
<img src="../_images/inheritance-78c46b99ccb4b1b92060aec14054863a6b1c26a6.png" alt="Inheritance diagram of matplotlib.mathtext" usemap="#inheritance0ca9968ee0" class="inheritance"/>
<map id="inheritance0ca9968ee0" name="inheritance0ca9968ee0">
<area shape="rect" id="node1" href="#matplotlib.mathtext.Accent" target="_top" title="The font metrics need to be dealt with differently for accents," alt="" coords="409,532,464,551"/>
<area shape="rect" id="node2" href="#matplotlib.mathtext.Char" target="_top" title="Represents a single character.  Unlike TeX, the font information" alt="" coords="214,537,269,556"/>
<area shape="rect" id="node3" href="#matplotlib.mathtext.AutoHeightChar" target="_top" title=":class:`AutoHeightChar` will create a character as close to the" alt="" coords="664,493,760,513"/>
<area shape="rect" id="node4" href="#matplotlib.mathtext.Hlist" target="_top" title="A horizontal list of boxes." alt="" coords="556,570,611,589"/>
<area shape="rect" id="node5" href="#matplotlib.mathtext.AutoWidthChar" target="_top" title=":class:`AutoWidthChar` will create a character as close to the" alt="" coords="666,532,758,551"/>
<area shape="rect" id="node24" href="#matplotlib.mathtext.HCentered" target="_top" title="A convenience class to create an :class:`Hlist` whose contents are" alt="" coords="677,570,747,589"/>
<area shape="rect" id="node51" href="#matplotlib.mathtext.SubSuperCluster" target="_top" title=":class:`SubSuperCluster` is a sort of hack to get around that fact" alt="" coords="662,608,762,627"/>
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<area shape="rect" id="node6" href="#matplotlib.mathtext.BakomaFonts" target="_top" title="Use the Bakoma TrueType fonts for rendering." alt="" coords="394,403,479,423"/>
<area shape="rect" id="node7" href="#matplotlib.mathtext.TruetypeFonts" target="_top" title="A generic base class for all font setups that use Truetype fonts" alt="" coords="198,423,285,442"/>
<area shape="rect" id="node13" href="#matplotlib.mathtext.UnicodeFonts" target="_top" title="An abstract base class for handling Unicode fonts." alt="" coords="394,441,479,461"/>
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<area shape="rect" id="node14" href="#matplotlib.mathtext.DejaVuSansFontConstants" target="_top" title="DejaVuSansFontConstants" alt="" coords="168,270,316,290"/>
<area shape="rect" id="node16" href="#matplotlib.mathtext.DejaVuSerifFontConstants" target="_top" title="DejaVuSerifFontConstants" alt="" coords="168,308,315,328"/>
<area shape="rect" id="node44" href="#matplotlib.mathtext.STIXFontConstants" target="_top" title="STIXFontConstants" alt="" coords="186,346,297,366"/>
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<area shape="rect" id="node15" href="#matplotlib.mathtext.DejaVuSansFonts" target="_top" title="A font handling class for the DejaVu Sans fonts" alt="" coords="660,374,764,394"/>
<area shape="rect" id="node17" href="#matplotlib.mathtext.DejaVuSerifFonts" target="_top" title="A font handling class for the DejaVu Serif fonts" alt="" coords="661,412,763,432"/>
<area shape="rect" id="node49" href="#matplotlib.mathtext.StixFonts" target="_top" title="A font handling class for the STIX fonts." alt="" coords="552,450,615,470"/>
<area shape="rect" id="node18" href="#matplotlib.mathtext.Fil" target="_top" title="Fil" alt="" coords="409,722,464,741"/>
<area shape="rect" id="node20" href="#matplotlib.mathtext.Fill" target="_top" title="Fill" alt="" coords="409,760,464,779"/>
<area shape="rect" id="node21" href="#matplotlib.mathtext.Filll" target="_top" title="Filll" alt="" coords="409,798,464,817"/>
<area shape="rect" id="node40" href="#matplotlib.mathtext.NegFil" target="_top" title="NegFil" alt="" coords="409,836,464,855"/>
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<area shape="rect" id="node47" href="#matplotlib.mathtext.SsGlue" target="_top" title="SsGlue" alt="" coords="409,950,464,970"/>
<area shape="rect" id="node22" href="#matplotlib.mathtext.Fonts" target="_top" title="An abstract base class for a system of fonts to use for mathtext." alt="" coords="33,441,88,461"/>
<area shape="rect" id="node48" href="#matplotlib.mathtext.StandardPsFonts" target="_top" title="Use the standard postscript fonts for rendering to backend_ps" alt="" coords="191,461,292,480"/>
<area shape="rect" id="node23" href="#matplotlib.mathtext.GlueSpec" target="_top" title="See :class:`Glue`." alt="" coords="29,247,93,266"/>
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<area shape="rect" id="node30" href="#matplotlib.mathtext.MathTextParser" target="_top" title="MathTextParser" alt="" coords="14,190,107,210"/>
<area shape="rect" id="node31" href="#matplotlib.mathtext.MathTextWarning" target="_top" title="MathTextWarning" alt="" coords="9,143,113,162"/>
<area shape="rect" id="node32" href="#matplotlib.mathtext.MathtextBackend" target="_top" title="The base class for the mathtext backend-specific code.  The" alt="" coords="8,100,113,119"/>
<area shape="rect" id="node33" href="#matplotlib.mathtext.MathtextBackendAgg" target="_top" title="Render glyphs and rectangles to an FTImage buffer, which is later" alt="" coords="179,4,304,24"/>
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<area shape="rect" id="node36" href="#matplotlib.mathtext.MathtextBackendPath" target="_top" title="Store information to write a mathtext rendering to the text path" alt="" coords="178,80,305,100"/>
<area shape="rect" id="node37" href="#matplotlib.mathtext.MathtextBackendPdf" target="_top" title="Store information to write a mathtext rendering to the PDF" alt="" coords="181,118,302,138"/>
<area shape="rect" id="node38" href="#matplotlib.mathtext.MathtextBackendPs" target="_top" title="Store information to write a mathtext rendering to the PostScript" alt="" coords="184,156,300,176"/>
<area shape="rect" id="node39" href="#matplotlib.mathtext.MathtextBackendSvg" target="_top" title="Store information to write a mathtext rendering to the SVG" alt="" coords="180,194,303,214"/>
<area shape="rect" id="node34" href="#matplotlib.mathtext.MathtextBackendBitmap" target="_top" title="MathtextBackendBitmap" alt="" coords="366,4,507,24"/>
<area shape="rect" id="node43" href="#matplotlib.mathtext.Parser" target="_top" title="This is the pyparsing-based parser for math expressions.  It" alt="" coords="33,62,88,81"/>
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<area shape="rect" id="node50" href="#matplotlib.mathtext.StixSansFonts" target="_top" title="A font handling class for the STIX fonts (that uses sans-serif" alt="" coords="668,450,756,470"/>
</map><div class="section" id="module-matplotlib.mathtext">
<span id="matplotlib-mathtext"></span><h2><a class="reference internal" href="#module-matplotlib.mathtext" title="matplotlib.mathtext"><code class="xref py py-mod docutils literal"><span class="pre">matplotlib.mathtext</span></code></a><a class="headerlink" href="#module-matplotlib.mathtext" title="Permalink to this headline">¶</a></h2>
<p><a class="reference internal" href="#module-matplotlib.mathtext" title="matplotlib.mathtext"><code class="xref py py-mod docutils literal"><span class="pre">mathtext</span></code></a> is a module for parsing a subset of the
TeX math syntax and drawing them to a matplotlib backend.</p>
<p>For a tutorial of its usage see <a class="reference internal" href="../tutorials/text/mathtext.html#sphx-glr-tutorials-text-mathtext-py"><span class="std std-ref">Writing mathematical expressions</span></a>. This
document is primarily concerned with implementation details.</p>
<p>The module uses <a class="reference external" href="http://pyparsing.wikispaces.com/">pyparsing</a> to parse the TeX expression.</p>
<p>The Bakoma distribution of the TeX Computer Modern fonts, and STIX
fonts are supported. There is experimental support for using
arbitrary fonts, but results may vary without proper tweaking and
metrics for those fonts.</p>
<dl class="class">
<dt id="matplotlib.mathtext.Accent">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">Accent</code><span class="sig-paren">(</span><em>c</em>, <em>state</em>, <em>math=True</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Accent" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.Char" title="matplotlib.mathtext.Char"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.Char</span></code></a></p>
<p>The font metrics need to be dealt with differently for accents,
since they are already offset correctly from the baseline in
TrueType fonts.</p>
<dl class="method">
<dt id="matplotlib.mathtext.Accent.grow">
<code class="descname">grow</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Accent.grow" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Accent.render">
<code class="descname">render</code><span class="sig-paren">(</span><em>x</em>, <em>y</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Accent.render" title="Permalink to this definition">¶</a></dt>
<dd><p>Render the character to the canvas.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Accent.shrink">
<code class="descname">shrink</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Accent.shrink" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.AutoHeightChar">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">AutoHeightChar</code><span class="sig-paren">(</span><em>c</em>, <em>height</em>, <em>depth</em>, <em>state</em>, <em>always=False</em>, <em>factor=None</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.AutoHeightChar" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.Hlist" title="matplotlib.mathtext.Hlist"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.Hlist</span></code></a></p>
<p><a class="reference internal" href="#matplotlib.mathtext.AutoHeightChar" title="matplotlib.mathtext.AutoHeightChar"><code class="xref py py-class docutils literal"><span class="pre">AutoHeightChar</span></code></a> will create a character as close to the
given height and depth as possible. When using a font with
multiple height versions of some characters (such as the BaKoMa
fonts), the correct glyph will be selected, otherwise this will
always just return a scaled version of the glyph.</p>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.AutoWidthChar">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">AutoWidthChar</code><span class="sig-paren">(</span><em>c</em>, <em>width</em>, <em>state</em>, <em>always=False</em>, <em>char_class=<class 'matplotlib.mathtext.Char'></em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.AutoWidthChar" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.Hlist" title="matplotlib.mathtext.Hlist"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.Hlist</span></code></a></p>
<p><a class="reference internal" href="#matplotlib.mathtext.AutoWidthChar" title="matplotlib.mathtext.AutoWidthChar"><code class="xref py py-class docutils literal"><span class="pre">AutoWidthChar</span></code></a> will create a character as close to the
given width as possible. When using a font with multiple width
versions of some characters (such as the BaKoMa fonts), the
correct glyph will be selected, otherwise this will always just
return a scaled version of the glyph.</p>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.BakomaFonts">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">BakomaFonts</code><span class="sig-paren">(</span><em>*args</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.BakomaFonts" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.TruetypeFonts" title="matplotlib.mathtext.TruetypeFonts"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.TruetypeFonts</span></code></a></p>
<p>Use the Bakoma TrueType fonts for rendering.</p>
<p>Symbols are strewn about a number of font files, each of which has
its own proprietary 8-bit encoding.</p>
<dl class="attribute">
<dt id="matplotlib.mathtext.BakomaFonts.alias">
<code class="descname">alias</code><em class="property"> = '\\]'</em><a class="headerlink" href="#matplotlib.mathtext.BakomaFonts.alias" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.BakomaFonts.get_sized_alternatives_for_symbol">
<code class="descname">get_sized_alternatives_for_symbol</code><span class="sig-paren">(</span><em>fontname</em>, <em>sym</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.BakomaFonts.get_sized_alternatives_for_symbol" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.mathtext.BakomaFonts.target">
<code class="descname">target</code><em class="property"> = ']'</em><a class="headerlink" href="#matplotlib.mathtext.BakomaFonts.target" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.Box">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">Box</code><span class="sig-paren">(</span><em>width</em>, <em>height</em>, <em>depth</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Box" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.Node" title="matplotlib.mathtext.Node"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.Node</span></code></a></p>
<p>Represents any node with a physical location.</p>
<dl class="method">
<dt id="matplotlib.mathtext.Box.grow">
<code class="descname">grow</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Box.grow" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Box.render">
<code class="descname">render</code><span class="sig-paren">(</span><em>x1</em>, <em>y1</em>, <em>x2</em>, <em>y2</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Box.render" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Box.shrink">
<code class="descname">shrink</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Box.shrink" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.Char">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">Char</code><span class="sig-paren">(</span><em>c</em>, <em>state</em>, <em>math=True</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Char" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.Node" title="matplotlib.mathtext.Node"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.Node</span></code></a></p>
<p>Represents a single character. Unlike TeX, the font information
and metrics are stored with each <a class="reference internal" href="#matplotlib.mathtext.Char" title="matplotlib.mathtext.Char"><code class="xref py py-class docutils literal"><span class="pre">Char</span></code></a> to make it easier
to lookup the font metrics when needed. Note that TeX boxes have
a width, height, and depth, unlike Type1 and Truetype which use a
full bounding box and an advance in the x-direction. The metrics
must be converted to the TeX way, and the advance (if different
from width) must be converted into a <a class="reference internal" href="#matplotlib.mathtext.Kern" title="matplotlib.mathtext.Kern"><code class="xref py py-class docutils literal"><span class="pre">Kern</span></code></a> node when the
<a class="reference internal" href="#matplotlib.mathtext.Char" title="matplotlib.mathtext.Char"><code class="xref py py-class docutils literal"><span class="pre">Char</span></code></a> is added to its parent <a class="reference internal" href="#matplotlib.mathtext.Hlist" title="matplotlib.mathtext.Hlist"><code class="xref py py-class docutils literal"><span class="pre">Hlist</span></code></a>.</p>
<dl class="method">
<dt id="matplotlib.mathtext.Char.get_kerning">
<code class="descname">get_kerning</code><span class="sig-paren">(</span><em>next</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Char.get_kerning" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the amount of kerning between this and the given
character. Called when characters are strung together into
<a class="reference internal" href="#matplotlib.mathtext.Hlist" title="matplotlib.mathtext.Hlist"><code class="xref py py-class docutils literal"><span class="pre">Hlist</span></code></a> to create <a class="reference internal" href="#matplotlib.mathtext.Kern" title="matplotlib.mathtext.Kern"><code class="xref py py-class docutils literal"><span class="pre">Kern</span></code></a> nodes.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Char.grow">
<code class="descname">grow</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Char.grow" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Char.is_slanted">
<code class="descname">is_slanted</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Char.is_slanted" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Char.render">
<code class="descname">render</code><span class="sig-paren">(</span><em>x</em>, <em>y</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Char.render" title="Permalink to this definition">¶</a></dt>
<dd><p>Render the character to the canvas</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Char.shrink">
<code class="descname">shrink</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Char.shrink" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.ComputerModernFontConstants">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">ComputerModernFontConstants</code><a class="headerlink" href="#matplotlib.mathtext.ComputerModernFontConstants" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.FontConstantsBase" title="matplotlib.mathtext.FontConstantsBase"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.FontConstantsBase</span></code></a></p>
<dl class="attribute">
<dt id="matplotlib.mathtext.ComputerModernFontConstants.delta">
<code class="descname">delta</code><em class="property"> = 0.075</em><a class="headerlink" href="#matplotlib.mathtext.ComputerModernFontConstants.delta" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.mathtext.ComputerModernFontConstants.delta_integral">
<code class="descname">delta_integral</code><em class="property"> = 0.3</em><a class="headerlink" href="#matplotlib.mathtext.ComputerModernFontConstants.delta_integral" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.mathtext.ComputerModernFontConstants.delta_slanted">
<code class="descname">delta_slanted</code><em class="property"> = 0.3</em><a class="headerlink" href="#matplotlib.mathtext.ComputerModernFontConstants.delta_slanted" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.mathtext.ComputerModernFontConstants.script_space">
<code class="descname">script_space</code><em class="property"> = 0.075</em><a class="headerlink" href="#matplotlib.mathtext.ComputerModernFontConstants.script_space" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.mathtext.ComputerModernFontConstants.sub1">
<code class="descname">sub1</code><em class="property"> = 0.2</em><a class="headerlink" href="#matplotlib.mathtext.ComputerModernFontConstants.sub1" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.mathtext.ComputerModernFontConstants.sub2">
<code class="descname">sub2</code><em class="property"> = 0.3</em><a class="headerlink" href="#matplotlib.mathtext.ComputerModernFontConstants.sub2" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.mathtext.ComputerModernFontConstants.subdrop">
<code class="descname">subdrop</code><em class="property"> = 0.2</em><a class="headerlink" href="#matplotlib.mathtext.ComputerModernFontConstants.subdrop" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.mathtext.ComputerModernFontConstants.sup1">
<code class="descname">sup1</code><em class="property"> = 0.45</em><a class="headerlink" href="#matplotlib.mathtext.ComputerModernFontConstants.sup1" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.DejaVuFonts">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">DejaVuFonts</code><span class="sig-paren">(</span><em>*args</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.DejaVuFonts" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.UnicodeFonts" title="matplotlib.mathtext.UnicodeFonts"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.UnicodeFonts</span></code></a></p>
<dl class="attribute">
<dt id="matplotlib.mathtext.DejaVuFonts.use_cmex">
<code class="descname">use_cmex</code><em class="property"> = False</em><a class="headerlink" href="#matplotlib.mathtext.DejaVuFonts.use_cmex" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.DejaVuSansFontConstants">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">DejaVuSansFontConstants</code><a class="headerlink" href="#matplotlib.mathtext.DejaVuSansFontConstants" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.FontConstantsBase" title="matplotlib.mathtext.FontConstantsBase"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.FontConstantsBase</span></code></a></p>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.DejaVuSansFonts">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">DejaVuSansFonts</code><span class="sig-paren">(</span><em>*args</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.DejaVuSansFonts" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.DejaVuFonts" title="matplotlib.mathtext.DejaVuFonts"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.DejaVuFonts</span></code></a></p>
<p>A font handling class for the DejaVu Sans fonts</p>
<p>If a glyph is not found it will fallback to Stix Sans</p>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.DejaVuSerifFontConstants">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">DejaVuSerifFontConstants</code><a class="headerlink" href="#matplotlib.mathtext.DejaVuSerifFontConstants" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.FontConstantsBase" title="matplotlib.mathtext.FontConstantsBase"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.FontConstantsBase</span></code></a></p>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.DejaVuSerifFonts">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">DejaVuSerifFonts</code><span class="sig-paren">(</span><em>*args</em>, <em>**kwargs</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.DejaVuSerifFonts" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.DejaVuFonts" title="matplotlib.mathtext.DejaVuFonts"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.DejaVuFonts</span></code></a></p>
<p>A font handling class for the DejaVu Serif fonts</p>
<p>If a glyph is not found it will fallback to Stix Serif</p>
</dd></dl>
<dl class="function">
<dt id="matplotlib.mathtext.Error">
<code class="descclassname">matplotlib.mathtext.</code><code class="descname">Error</code><span class="sig-paren">(</span><em>msg</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Error" title="Permalink to this definition">¶</a></dt>
<dd><p>Helper class to raise parser errors.</p>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.Fil">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">Fil</code><a class="headerlink" href="#matplotlib.mathtext.Fil" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.Glue" title="matplotlib.mathtext.Glue"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.Glue</span></code></a></p>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.Fill">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">Fill</code><a class="headerlink" href="#matplotlib.mathtext.Fill" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.Glue" title="matplotlib.mathtext.Glue"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.Glue</span></code></a></p>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.Filll">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">Filll</code><a class="headerlink" href="#matplotlib.mathtext.Filll" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.Glue" title="matplotlib.mathtext.Glue"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.Glue</span></code></a></p>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.FontConstantsBase">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">FontConstantsBase</code><a class="headerlink" href="#matplotlib.mathtext.FontConstantsBase" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference external" href="https://docs.python.org/3/library/functions.html#object" title="(in Python v3.6)"><code class="xref py py-class docutils literal"><span class="pre">object</span></code></a></p>
<p>A set of constants that controls how certain things, such as sub-
and superscripts are laid out. These are all metrics that can’t
be reliably retrieved from the font metrics in the font itself.</p>
<dl class="attribute">
<dt id="matplotlib.mathtext.FontConstantsBase.delta">
<code class="descname">delta</code><em class="property"> = 0.025</em><a class="headerlink" href="#matplotlib.mathtext.FontConstantsBase.delta" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.mathtext.FontConstantsBase.delta_integral">
<code class="descname">delta_integral</code><em class="property"> = 0.1</em><a class="headerlink" href="#matplotlib.mathtext.FontConstantsBase.delta_integral" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.mathtext.FontConstantsBase.delta_slanted">
<code class="descname">delta_slanted</code><em class="property"> = 0.2</em><a class="headerlink" href="#matplotlib.mathtext.FontConstantsBase.delta_slanted" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.mathtext.FontConstantsBase.script_space">
<code class="descname">script_space</code><em class="property"> = 0.05</em><a class="headerlink" href="#matplotlib.mathtext.FontConstantsBase.script_space" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.mathtext.FontConstantsBase.sub1">
<code class="descname">sub1</code><em class="property"> = 0.3</em><a class="headerlink" href="#matplotlib.mathtext.FontConstantsBase.sub1" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.mathtext.FontConstantsBase.sub2">
<code class="descname">sub2</code><em class="property"> = 0.5</em><a class="headerlink" href="#matplotlib.mathtext.FontConstantsBase.sub2" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.mathtext.FontConstantsBase.subdrop">
<code class="descname">subdrop</code><em class="property"> = 0.4</em><a class="headerlink" href="#matplotlib.mathtext.FontConstantsBase.subdrop" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.mathtext.FontConstantsBase.sup1">
<code class="descname">sup1</code><em class="property"> = 0.7</em><a class="headerlink" href="#matplotlib.mathtext.FontConstantsBase.sup1" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.Fonts">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">Fonts</code><span class="sig-paren">(</span><em>default_font_prop</em>, <em>mathtext_backend</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Fonts" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference external" href="https://docs.python.org/3/library/functions.html#object" title="(in Python v3.6)"><code class="xref py py-class docutils literal"><span class="pre">object</span></code></a></p>
<p>An abstract base class for a system of fonts to use for mathtext.</p>
<p>The class must be able to take symbol keys and font file names and
return the character metrics. It also delegates to a backend class
to do the actual drawing.</p>
<p><em>default_font_prop</em>: A
<a class="reference internal" href="font_manager_api.html#matplotlib.font_manager.FontProperties" title="matplotlib.font_manager.FontProperties"><code class="xref py py-class docutils literal"><span class="pre">FontProperties</span></code></a> object to use
for the default non-math font, or the base font for Unicode
(generic) font rendering.</p>
<p><em>mathtext_backend</em>: A subclass of <code class="xref py py-class docutils literal"><span class="pre">MathTextBackend</span></code>
used to delegate the actual rendering.</p>
<dl class="method">
<dt id="matplotlib.mathtext.Fonts.destroy">
<code class="descname">destroy</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Fonts.destroy" title="Permalink to this definition">¶</a></dt>
<dd><p>Fix any cyclical references before the object is about
to be destroyed.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Fonts.get_kern">
<code class="descname">get_kern</code><span class="sig-paren">(</span><em>font1</em>, <em>fontclass1</em>, <em>sym1</em>, <em>fontsize1</em>, <em>font2</em>, <em>fontclass2</em>, <em>sym2</em>, <em>fontsize2</em>, <em>dpi</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Fonts.get_kern" title="Permalink to this definition">¶</a></dt>
<dd><p>Get the kerning distance for font between <em>sym1</em> and <em>sym2</em>.</p>
<p><em>fontX</em>: one of the TeX font names:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">tt</span><span class="p">,</span> <span class="n">it</span><span class="p">,</span> <span class="n">rm</span><span class="p">,</span> <span class="n">cal</span><span class="p">,</span> <span class="n">sf</span><span class="p">,</span> <span class="n">bf</span> <span class="ow">or</span> <span class="n">default</span><span class="o">/</span><span class="n">regular</span> <span class="p">(</span><span class="n">non</span><span class="o">-</span><span class="n">math</span><span class="p">)</span>
</pre></div>
</div>
<p><em>fontclassX</em>: TODO</p>
<p><em>symX</em>: a symbol in raw TeX form. e.g., ‘1’, ‘x’ or ‘sigma’</p>
<p><em>fontsizeX</em>: the fontsize in points</p>
<p><em>dpi</em>: the current dots-per-inch</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Fonts.get_metrics">
<code class="descname">get_metrics</code><span class="sig-paren">(</span><em>font</em>, <em>font_class</em>, <em>sym</em>, <em>fontsize</em>, <em>dpi</em>, <em>math=True</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Fonts.get_metrics" title="Permalink to this definition">¶</a></dt>
<dd><p><em>font</em>: one of the TeX font names:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">tt</span><span class="p">,</span> <span class="n">it</span><span class="p">,</span> <span class="n">rm</span><span class="p">,</span> <span class="n">cal</span><span class="p">,</span> <span class="n">sf</span><span class="p">,</span> <span class="n">bf</span> <span class="ow">or</span> <span class="n">default</span><span class="o">/</span><span class="n">regular</span> <span class="p">(</span><span class="n">non</span><span class="o">-</span><span class="n">math</span><span class="p">)</span>
</pre></div>
</div>
<p><em>font_class</em>: TODO</p>
<p><em>sym</em>: a symbol in raw TeX form. e.g., ‘1’, ‘x’ or ‘sigma’</p>
<p><em>fontsize</em>: font size in points</p>
<p><em>dpi</em>: current dots-per-inch</p>
<p><em>math</em>: whether sym is a math character</p>
<p>Returns an object with the following attributes:</p>
<blockquote>
<div><ul class="simple">
<li><em>advance</em>: The advance distance (in points) of the glyph.</li>
<li><em>height</em>: The height of the glyph in points.</li>
<li><em>width</em>: The width of the glyph in points.</li>
<li><em>xmin</em>, <em>xmax</em>, <em>ymin</em>, <em>ymax</em> - the ink rectangle of the glyph</li>
<li><em>iceberg</em> - the distance from the baseline to the top of
the glyph. This corresponds to TeX’s definition of
“height”.</li>
</ul>
</div></blockquote>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Fonts.get_results">
<code class="descname">get_results</code><span class="sig-paren">(</span><em>box</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Fonts.get_results" title="Permalink to this definition">¶</a></dt>
<dd><p>Get the data needed by the backend to render the math
expression. The return value is backend-specific.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Fonts.get_sized_alternatives_for_symbol">
<code class="descname">get_sized_alternatives_for_symbol</code><span class="sig-paren">(</span><em>fontname</em>, <em>sym</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Fonts.get_sized_alternatives_for_symbol" title="Permalink to this definition">¶</a></dt>
<dd><p>Override if your font provides multiple sizes of the same
symbol. Should return a list of symbols matching <em>sym</em> in
various sizes. The expression renderer will select the most
appropriate size for a given situation from this list.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Fonts.get_underline_thickness">
<code class="descname">get_underline_thickness</code><span class="sig-paren">(</span><em>font</em>, <em>fontsize</em>, <em>dpi</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Fonts.get_underline_thickness" title="Permalink to this definition">¶</a></dt>
<dd><p>Get the line thickness that matches the given font. Used as a
base unit for drawing lines such as in a fraction or radical.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Fonts.get_used_characters">
<code class="descname">get_used_characters</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Fonts.get_used_characters" title="Permalink to this definition">¶</a></dt>
<dd><p>Get the set of characters that were used in the math
expression. Used by backends that need to subset fonts so
they know which glyphs to include.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Fonts.get_xheight">
<code class="descname">get_xheight</code><span class="sig-paren">(</span><em>font</em>, <em>fontsize</em>, <em>dpi</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Fonts.get_xheight" title="Permalink to this definition">¶</a></dt>
<dd><p>Get the xheight for the given <em>font</em> and <em>fontsize</em>.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Fonts.render_glyph">
<code class="descname">render_glyph</code><span class="sig-paren">(</span><em>ox</em>, <em>oy</em>, <em>facename</em>, <em>font_class</em>, <em>sym</em>, <em>fontsize</em>, <em>dpi</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Fonts.render_glyph" title="Permalink to this definition">¶</a></dt>
<dd><p>Draw a glyph at</p>
<blockquote>
<div><ul class="simple">
<li><em>ox</em>, <em>oy</em>: position</li>
<li><em>facename</em>: One of the TeX face names</li>
<li><em>font_class</em>:</li>
<li><em>sym</em>: TeX symbol name or single character</li>
<li><em>fontsize</em>: fontsize in points</li>
<li><em>dpi</em>: The dpi to draw at.</li>
</ul>
</div></blockquote>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Fonts.render_rect_filled">
<code class="descname">render_rect_filled</code><span class="sig-paren">(</span><em>x1</em>, <em>y1</em>, <em>x2</em>, <em>y2</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Fonts.render_rect_filled" title="Permalink to this definition">¶</a></dt>
<dd><p>Draw a filled rectangle from (<em>x1</em>, <em>y1</em>) to (<em>x2</em>, <em>y2</em>).</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Fonts.set_canvas_size">
<code class="descname">set_canvas_size</code><span class="sig-paren">(</span><em>w</em>, <em>h</em>, <em>d</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Fonts.set_canvas_size" title="Permalink to this definition">¶</a></dt>
<dd><p>Set the size of the buffer used to render the math expression.
Only really necessary for the bitmap backends.</p>
</dd></dl>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.Glue">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">Glue</code><span class="sig-paren">(</span><em>glue_type</em>, <em>copy=False</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Glue" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.Node" title="matplotlib.mathtext.Node"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.Node</span></code></a></p>
<p>Most of the information in this object is stored in the underlying
<a class="reference internal" href="#matplotlib.mathtext.GlueSpec" title="matplotlib.mathtext.GlueSpec"><code class="xref py py-class docutils literal"><span class="pre">GlueSpec</span></code></a> class, which is shared between multiple glue objects. (This
is a memory optimization which probably doesn’t matter anymore, but it’s
easier to stick to what TeX does.)</p>
<dl class="method">
<dt id="matplotlib.mathtext.Glue.grow">
<code class="descname">grow</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Glue.grow" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Glue.shrink">
<code class="descname">shrink</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Glue.shrink" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.GlueSpec">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">GlueSpec</code><span class="sig-paren">(</span><em>width=0.0</em>, <em>stretch=0.0</em>, <em>stretch_order=0</em>, <em>shrink=0.0</em>, <em>shrink_order=0</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.GlueSpec" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference external" href="https://docs.python.org/3/library/functions.html#object" title="(in Python v3.6)"><code class="xref py py-class docutils literal"><span class="pre">object</span></code></a></p>
<p>See <a class="reference internal" href="#matplotlib.mathtext.Glue" title="matplotlib.mathtext.Glue"><code class="xref py py-class docutils literal"><span class="pre">Glue</span></code></a>.</p>
<dl class="method">
<dt id="matplotlib.mathtext.GlueSpec.copy">
<code class="descname">copy</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.GlueSpec.copy" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="classmethod">
<dt id="matplotlib.mathtext.GlueSpec.factory">
<em class="property">classmethod </em><code class="descname">factory</code><span class="sig-paren">(</span><em>glue_type</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.GlueSpec.factory" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.HCentered">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">HCentered</code><span class="sig-paren">(</span><em>elements</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.HCentered" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.Hlist" title="matplotlib.mathtext.Hlist"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.Hlist</span></code></a></p>
<p>A convenience class to create an <a class="reference internal" href="#matplotlib.mathtext.Hlist" title="matplotlib.mathtext.Hlist"><code class="xref py py-class docutils literal"><span class="pre">Hlist</span></code></a> whose contents are
centered within its enclosing box.</p>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.Hbox">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">Hbox</code><span class="sig-paren">(</span><em>width</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Hbox" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.Box" title="matplotlib.mathtext.Box"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.Box</span></code></a></p>
<p>A box with only width (zero height and depth).</p>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.Hlist">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">Hlist</code><span class="sig-paren">(</span><em>elements</em>, <em>w=0.0</em>, <em>m='additional'</em>, <em>do_kern=True</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Hlist" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.List" title="matplotlib.mathtext.List"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.List</span></code></a></p>
<p>A horizontal list of boxes.</p>
<dl class="method">
<dt id="matplotlib.mathtext.Hlist.hpack">
<code class="descname">hpack</code><span class="sig-paren">(</span><em>w=0.0</em>, <em>m='additional'</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Hlist.hpack" title="Permalink to this definition">¶</a></dt>
<dd><p>The main duty of <a class="reference internal" href="#matplotlib.mathtext.Hlist.hpack" title="matplotlib.mathtext.Hlist.hpack"><code class="xref py py-meth docutils literal"><span class="pre">hpack()</span></code></a> is to compute the dimensions of
the resulting boxes, and to adjust the glue if one of those
dimensions is pre-specified. The computed sizes normally
enclose all of the material inside the new box; but some items
may stick out if negative glue is used, if the box is
overfull, or if a <code class="docutils literal"><span class="pre">\vbox</span></code> includes other boxes that have
been shifted left.</p>
<blockquote>
<div><ul class="simple">
<li><em>w</em>: specifies a width</li>
<li><em>m</em>: is either ‘exactly’ or ‘additional’.</li>
</ul>
</div></blockquote>
<p>Thus, <code class="docutils literal"><span class="pre">hpack(w,</span> <span class="pre">'exactly')</span></code> produces a box whose width is
exactly <em>w</em>, while <code class="docutils literal"><span class="pre">hpack(w,</span> <span class="pre">'additional')</span></code> yields a box
whose width is the natural width plus <em>w</em>. The default values
produce a box with the natural width.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Hlist.kern">
<code class="descname">kern</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Hlist.kern" title="Permalink to this definition">¶</a></dt>
<dd><p>Insert <a class="reference internal" href="#matplotlib.mathtext.Kern" title="matplotlib.mathtext.Kern"><code class="xref py py-class docutils literal"><span class="pre">Kern</span></code></a> nodes between <a class="reference internal" href="#matplotlib.mathtext.Char" title="matplotlib.mathtext.Char"><code class="xref py py-class docutils literal"><span class="pre">Char</span></code></a> nodes to set
kerning. The <a class="reference internal" href="#matplotlib.mathtext.Char" title="matplotlib.mathtext.Char"><code class="xref py py-class docutils literal"><span class="pre">Char</span></code></a> nodes themselves determine the
amount of kerning they need (in <a class="reference internal" href="#matplotlib.mathtext.Char.get_kerning" title="matplotlib.mathtext.Char.get_kerning"><code class="xref py py-meth docutils literal"><span class="pre">get_kerning()</span></code></a>),
and this function just creates the linked list in the correct
way.</p>
</dd></dl>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.Hrule">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">Hrule</code><span class="sig-paren">(</span><em>state</em>, <em>thickness=None</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Hrule" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.Rule" title="matplotlib.mathtext.Rule"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.Rule</span></code></a></p>
<p>Convenience class to create a horizontal rule.</p>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.Kern">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">Kern</code><span class="sig-paren">(</span><em>width</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Kern" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.Node" title="matplotlib.mathtext.Node"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.Node</span></code></a></p>
<p>A <a class="reference internal" href="#matplotlib.mathtext.Kern" title="matplotlib.mathtext.Kern"><code class="xref py py-class docutils literal"><span class="pre">Kern</span></code></a> node has a width field to specify a (normally
negative) amount of spacing. This spacing correction appears in
horizontal lists between letters like A and V when the font
designer said that it looks better to move them closer together or
further apart. A kern node can also appear in a vertical list,
when its <em>width</em> denotes additional spacing in the vertical
direction.</p>
<dl class="attribute">
<dt id="matplotlib.mathtext.Kern.depth">
<code class="descname">depth</code><em class="property"> = 0</em><a class="headerlink" href="#matplotlib.mathtext.Kern.depth" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Kern.grow">
<code class="descname">grow</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Kern.grow" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="attribute">
<dt id="matplotlib.mathtext.Kern.height">
<code class="descname">height</code><em class="property"> = 0</em><a class="headerlink" href="#matplotlib.mathtext.Kern.height" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.Kern.shrink">
<code class="descname">shrink</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.Kern.shrink" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.List">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">List</code><span class="sig-paren">(</span><em>elements</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.List" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.Box" title="matplotlib.mathtext.Box"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.Box</span></code></a></p>
<p>A list of nodes (either horizontal or vertical).</p>
<dl class="method">
<dt id="matplotlib.mathtext.List.grow">
<code class="descname">grow</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.List.grow" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.List.shrink">
<code class="descname">shrink</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.List.shrink" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.MathTextParser">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">MathTextParser</code><span class="sig-paren">(</span><em>output</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathTextParser" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference external" href="https://docs.python.org/3/library/functions.html#object" title="(in Python v3.6)"><code class="xref py py-class docutils literal"><span class="pre">object</span></code></a></p>
<p>Create a MathTextParser for the given backend <em>output</em>.</p>
<dl class="method">
<dt id="matplotlib.mathtext.MathTextParser.get_depth">
<code class="descname">get_depth</code><span class="sig-paren">(</span><em>texstr</em>, <em>dpi=120</em>, <em>fontsize=14</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathTextParser.get_depth" title="Permalink to this definition">¶</a></dt>
<dd><p>Returns the offset of the baseline from the bottom of the
image in pixels.</p>
<dl class="docutils">
<dt><em>texstr</em></dt>
<dd>A valid mathtext string, e.g., r’IQ: $sigma_i=15$’</dd>
<dt><em>dpi</em></dt>
<dd>The dots-per-inch to render the text</dd>
<dt><em>fontsize</em></dt>
<dd>The font size in points</dd>
</dl>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.MathTextParser.parse">
<code class="descname">parse</code><span class="sig-paren">(</span><em>s</em>, <em>dpi=72</em>, <em>prop=None</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathTextParser.parse" title="Permalink to this definition">¶</a></dt>
<dd><p>Parse the given math expression <em>s</em> at the given <em>dpi</em>. If
<em>prop</em> is provided, it is a
<a class="reference internal" href="font_manager_api.html#matplotlib.font_manager.FontProperties" title="matplotlib.font_manager.FontProperties"><code class="xref py py-class docutils literal"><span class="pre">FontProperties</span></code></a> object
specifying the “default” font to use in the math expression,
used for all non-math text.</p>
<p>The results are cached, so multiple calls to <a class="reference internal" href="#matplotlib.mathtext.MathTextParser.parse" title="matplotlib.mathtext.MathTextParser.parse"><code class="xref py py-meth docutils literal"><span class="pre">parse()</span></code></a>
with the same expression should be fast.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.MathTextParser.to_mask">
<code class="descname">to_mask</code><span class="sig-paren">(</span><em>texstr</em>, <em>dpi=120</em>, <em>fontsize=14</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathTextParser.to_mask" title="Permalink to this definition">¶</a></dt>
<dd><dl class="docutils">
<dt><em>texstr</em></dt>
<dd>A valid mathtext string, e.g., r’IQ: $sigma_i=15$’</dd>
<dt><em>dpi</em></dt>
<dd>The dots-per-inch to render the text</dd>
<dt><em>fontsize</em></dt>
<dd>The font size in points</dd>
</dl>
<p>Returns a tuple (<em>array</em>, <em>depth</em>)</p>
<blockquote>
<div><ul class="simple">
<li><em>array</em> is an NxM uint8 alpha ubyte mask array of
rasterized tex.</li>
<li>depth is the offset of the baseline from the bottom of the
image in pixels.</li>
</ul>
</div></blockquote>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.MathTextParser.to_png">
<code class="descname">to_png</code><span class="sig-paren">(</span><em>filename</em>, <em>texstr</em>, <em>color='black'</em>, <em>dpi=120</em>, <em>fontsize=14</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathTextParser.to_png" title="Permalink to this definition">¶</a></dt>
<dd><p>Writes a tex expression to a PNG file.</p>
<p>Returns the offset of the baseline from the bottom of the
image in pixels.</p>
<dl class="docutils">
<dt><em>filename</em></dt>
<dd>A writable filename or fileobject</dd>
<dt><em>texstr</em></dt>
<dd>A valid mathtext string, e.g., r’IQ: $sigma_i=15$’</dd>
<dt><em>color</em></dt>
<dd>A valid matplotlib color argument</dd>
<dt><em>dpi</em></dt>
<dd>The dots-per-inch to render the text</dd>
<dt><em>fontsize</em></dt>
<dd>The font size in points</dd>
</dl>
<p>Returns the offset of the baseline from the bottom of the
image in pixels.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.MathTextParser.to_rgba">
<code class="descname">to_rgba</code><span class="sig-paren">(</span><em>texstr</em>, <em>color='black'</em>, <em>dpi=120</em>, <em>fontsize=14</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathTextParser.to_rgba" title="Permalink to this definition">¶</a></dt>
<dd><dl class="docutils">
<dt><em>texstr</em></dt>
<dd>A valid mathtext string, e.g., r’IQ: $sigma_i=15$’</dd>
<dt><em>color</em></dt>
<dd>Any matplotlib color argument</dd>
<dt><em>dpi</em></dt>
<dd>The dots-per-inch to render the text</dd>
<dt><em>fontsize</em></dt>
<dd>The font size in points</dd>
</dl>
<p>Returns a tuple (<em>array</em>, <em>depth</em>)</p>
<blockquote>
<div><ul class="simple">
<li><em>array</em> is an NxM uint8 alpha ubyte mask array of
rasterized tex.</li>
<li>depth is the offset of the baseline from the bottom of the
image in pixels.</li>
</ul>
</div></blockquote>
</dd></dl>
</dd></dl>
<dl class="exception">
<dt id="matplotlib.mathtext.MathTextWarning">
<em class="property">exception </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">MathTextWarning</code><a class="headerlink" href="#matplotlib.mathtext.MathTextWarning" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference external" href="https://docs.python.org/3/library/exceptions.html#Warning" title="(in Python v3.6)"><code class="xref py py-class docutils literal"><span class="pre">Warning</span></code></a></p>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.MathtextBackend">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">MathtextBackend</code><a class="headerlink" href="#matplotlib.mathtext.MathtextBackend" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference external" href="https://docs.python.org/3/library/functions.html#object" title="(in Python v3.6)"><code class="xref py py-class docutils literal"><span class="pre">object</span></code></a></p>
<p>The base class for the mathtext backend-specific code. The
purpose of <a class="reference internal" href="#matplotlib.mathtext.MathtextBackend" title="matplotlib.mathtext.MathtextBackend"><code class="xref py py-class docutils literal"><span class="pre">MathtextBackend</span></code></a> subclasses is to interface
between mathtext and a specific matplotlib graphics backend.</p>
<p>Subclasses need to override the following:</p>
<blockquote>
<div><ul class="simple">
<li><a class="reference internal" href="#matplotlib.mathtext.MathtextBackend.render_glyph" title="matplotlib.mathtext.MathtextBackend.render_glyph"><code class="xref py py-meth docutils literal"><span class="pre">render_glyph()</span></code></a></li>
<li><a class="reference internal" href="#matplotlib.mathtext.MathtextBackend.render_rect_filled" title="matplotlib.mathtext.MathtextBackend.render_rect_filled"><code class="xref py py-meth docutils literal"><span class="pre">render_rect_filled()</span></code></a></li>
<li><a class="reference internal" href="#matplotlib.mathtext.MathtextBackend.get_results" title="matplotlib.mathtext.MathtextBackend.get_results"><code class="xref py py-meth docutils literal"><span class="pre">get_results()</span></code></a></li>
</ul>
</div></blockquote>
<p>And optionally, if you need to use a FreeType hinting style:</p>
<blockquote>
<div><ul class="simple">
<li><a class="reference internal" href="#matplotlib.mathtext.MathtextBackend.get_hinting_type" title="matplotlib.mathtext.MathtextBackend.get_hinting_type"><code class="xref py py-meth docutils literal"><span class="pre">get_hinting_type()</span></code></a></li>
</ul>
</div></blockquote>
<dl class="method">
<dt id="matplotlib.mathtext.MathtextBackend.get_hinting_type">
<code class="descname">get_hinting_type</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathtextBackend.get_hinting_type" title="Permalink to this definition">¶</a></dt>
<dd><p>Get the FreeType hinting type to use with this particular
backend.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.MathtextBackend.get_results">
<code class="descname">get_results</code><span class="sig-paren">(</span><em>box</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathtextBackend.get_results" title="Permalink to this definition">¶</a></dt>
<dd><p>Return a backend-specific tuple to return to the backend after
all processing is done.</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.MathtextBackend.render_glyph">
<code class="descname">render_glyph</code><span class="sig-paren">(</span><em>ox</em>, <em>oy</em>, <em>info</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathtextBackend.render_glyph" title="Permalink to this definition">¶</a></dt>
<dd><p>Draw a glyph described by <em>info</em> to the reference point (<em>ox</em>,
<em>oy</em>).</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.MathtextBackend.render_rect_filled">
<code class="descname">render_rect_filled</code><span class="sig-paren">(</span><em>x1</em>, <em>y1</em>, <em>x2</em>, <em>y2</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathtextBackend.render_rect_filled" title="Permalink to this definition">¶</a></dt>
<dd><p>Draw a filled black rectangle from (<em>x1</em>, <em>y1</em>) to (<em>x2</em>, <em>y2</em>).</p>
</dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.MathtextBackend.set_canvas_size">
<code class="descname">set_canvas_size</code><span class="sig-paren">(</span><em>w</em>, <em>h</em>, <em>d</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathtextBackend.set_canvas_size" title="Permalink to this definition">¶</a></dt>
<dd><p>Dimension the drawing canvas</p>
</dd></dl>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.MathtextBackendAgg">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">MathtextBackendAgg</code><a class="headerlink" href="#matplotlib.mathtext.MathtextBackendAgg" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.MathtextBackend" title="matplotlib.mathtext.MathtextBackend"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.MathtextBackend</span></code></a></p>
<p>Render glyphs and rectangles to an FTImage buffer, which is later
transferred to the Agg image by the Agg backend.</p>
<dl class="method">
<dt id="matplotlib.mathtext.MathtextBackendAgg.get_hinting_type">
<code class="descname">get_hinting_type</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathtextBackendAgg.get_hinting_type" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.MathtextBackendAgg.get_results">
<code class="descname">get_results</code><span class="sig-paren">(</span><em>box</em>, <em>used_characters</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathtextBackendAgg.get_results" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.MathtextBackendAgg.render_glyph">
<code class="descname">render_glyph</code><span class="sig-paren">(</span><em>ox</em>, <em>oy</em>, <em>info</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathtextBackendAgg.render_glyph" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.MathtextBackendAgg.render_rect_filled">
<code class="descname">render_rect_filled</code><span class="sig-paren">(</span><em>x1</em>, <em>y1</em>, <em>x2</em>, <em>y2</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathtextBackendAgg.render_rect_filled" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="method">
<dt id="matplotlib.mathtext.MathtextBackendAgg.set_canvas_size">
<code class="descname">set_canvas_size</code><span class="sig-paren">(</span><em>w</em>, <em>h</em>, <em>d</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathtextBackendAgg.set_canvas_size" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.MathtextBackendBitmap">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">MathtextBackendBitmap</code><a class="headerlink" href="#matplotlib.mathtext.MathtextBackendBitmap" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.MathtextBackendAgg" title="matplotlib.mathtext.MathtextBackendAgg"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.MathtextBackendAgg</span></code></a></p>
<dl class="method">
<dt id="matplotlib.mathtext.MathtextBackendBitmap.get_results">
<code class="descname">get_results</code><span class="sig-paren">(</span><em>box</em>, <em>used_characters</em><span class="sig-paren">)</span><a class="headerlink" href="#matplotlib.mathtext.MathtextBackendBitmap.get_results" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>
</dd></dl>
<dl class="class">
<dt id="matplotlib.mathtext.MathtextBackendCairo">
<em class="property">class </em><code class="descclassname">matplotlib.mathtext.</code><code class="descname">MathtextBackendCairo</code><a class="headerlink" href="#matplotlib.mathtext.MathtextBackendCairo" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="#matplotlib.mathtext.MathtextBackend" title="matplotlib.mathtext.MathtextBackend"><code class="xref py py-class docutils literal"><span class="pre">matplotlib.mathtext.MathtextBackend</span></code></a></p>
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