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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

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<title>api example code: mathtext_asarray.py — Matplotlib 2.0.2 documentation</title>

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<span id="api-mathtext-asarray"></span><h1>api example code: mathtext_asarray.py<a class="headerlink" href="#api-example-code-mathtext-asarray-py" title="Permalink to this headline">¶</a></h1>

<p>(<a class="reference external" href="../../mpl_examples/api/mathtext_asarray.py">Source code</a>, <a class="reference external" href="../../mpl_examples/api/mathtext_asarray.png">png</a>, <a class="reference external" href="../../mpl_examples/api/mathtext_asarray.pdf">pdf</a>)</p>

</div>

<span class="sd">A mathtext image as numpy array</span>

<span class="sd">This example shows how to make images from LaTeX strings.</span>

<span class="kn">import</span> <span class="nn">matplotlib.mathtext</span> <span class="k">as</span> <span class="nn">mathtext</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</span>

<span class="n">matplotlib</span><span class="o">.</span><span class="n">rc</span><span class="p">(</span><span class="s1">'image'</span><span class="p">,</span> <span class="n">origin</span><span class="o">=</span><span class="s1">'upper'</span><span class="p">)</span>

<span class="n">parser</span> <span class="o">=</span> <span class="n">mathtext</span><span class="o">.</span><span class="n">MathTextParser</span><span class="p">(</span><span class="s2">"Bitmap"</span><span class="p">)</span>

<span class="n">parser</span><span class="o">.</span><span class="n">to_png</span><span class="p">(</span><span class="s1">'test2.png'</span><span class="p">,</span>

<span class="sa">r</span><span class="s1">'$\left[\left\lfloor\frac</span><span class="si">{5}</span><span class="s1">{\frac{\left(3\right)}</span><span class="si">{4}</span><span class="s1">} '</span>

<span class="sa">r</span><span class="s1">'y\right)\right]$'</span><span class="p">,</span> <span class="n">color</span><span class="o">=</span><span class="s1">'green'</span><span class="p">,</span> <span class="n">fontsize</span><span class="o">=</span><span class="mi">14</span><span class="p">,</span> <span class="n">dpi</span><span class="o">=</span><span class="mi">100</span><span class="p">)</span>

<span class="n">rgba1</span><span class="p">,</span> <span class="n">depth1</span> <span class="o">=</span> <span class="n">parser</span><span class="o">.</span><span class="n">to_rgba</span><span class="p">(</span>

<span class="sa">r</span><span class="s1">'IQ: $\sigma_i=15$'</span><span class="p">,</span> <span class="n">color</span><span class="o">=</span><span class="s1">'blue'</span><span class="p">,</span> <span class="n">fontsize</span><span class="o">=</span><span class="mi">20</span><span class="p">,</span> <span class="n">dpi</span><span class="o">=</span><span class="mi">200</span><span class="p">)</span>

<span class="n">rgba2</span><span class="p">,</span> <span class="n">depth2</span> <span class="o">=</span> <span class="n">parser</span><span class="o">.</span><span class="n">to_rgba</span><span class="p">(</span>

<span class="sa">r</span><span class="s1">'some other string'</span><span class="p">,</span> <span class="n">color</span><span class="o">=</span><span class="s1">'red'</span><span class="p">,</span> <span class="n">fontsize</span><span class="o">=</span><span class="mi">20</span><span class="p">,</span> <span class="n">dpi</span><span class="o">=</span><span class="mi">200</span><span class="p">)</span>

<span class="n">fig</span> <span class="o">=</span> <span class="n">plt</span><span class="o">.</span><span class="n">figure</span><span class="p">()</span>

<span class="n">fig</span><span class="o">.</span><span class="n">figimage</span><span class="p">(</span><span class="n">rgba1</span><span class="o">.</span><span class="n">astype</span><span class="p">(</span><span class="nb">float</span><span class="p">)</span><span class="o">/</span><span class="mf">255.</span><span class="p">,</span> <span class="mi">100</span><span class="p">,</span> <span class="mi">100</span><span class="p">)</span>

<span class="n">fig</span><span class="o">.</span><span class="n">figimage</span><span class="p">(</span><span class="n">rgba2</span><span class="o">.</span><span class="n">astype</span><span class="p">(</span><span class="nb">float</span><span class="p">)</span><span class="o">/</span><span class="mf">255.</span><span class="p">,</span> <span class="mi">100</span><span class="p">,</span> <span class="mi">300</span><span class="p">)</span>

</pre></div>

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<p>Keywords: python, matplotlib, pylab, example, codex (see <a class="reference internal" href="../../faq/howto_faq.html#how-to-search-examples"><span class="std std-ref">Search examples</span></a>)</p>

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