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<span id="sphx-glr-gallery-mplot3d-contourf3d-py"></span><h1>Filled contours<a class="headerlink" href="#filled-contours" title="Permalink to this headline">¶</a></h1>

<p>contourf differs from contour in that it creates filled contours, ie.

a discrete number of colours are used to shade the domain.</p>

<p>This is like a contourf plot in 2D except that the shaded region corresponding

to the level c is graphed on the plane z=c.</p>

<img alt="contourf3d" class="sphx-glr-single-img" src="../../_images/sphx_glr_contourf3d_001.png" />

<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="kn">from</span> <span class="nn">mpl_toolkits.mplot3d</span> <span class="kn">import</span> <span class="n">axes3d</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">from</span> <span class="nn">matplotlib</span> <span class="kn">import</span> <span class="n">cm</span>

<a href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure" title="matplotlib.figure.Figure" class="sphx-glr-backref-module-matplotlib-figure sphx-glr-backref-type-py-class sphx-glr-backref-instance"><a href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure" title="matplotlib.figure.Figure" class="sphx-glr-backref-module-matplotlib-figure sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">fig</span></a></a> <span class="o">=</span> <a href="../../api/_as_gen/matplotlib.pyplot.figure.html#matplotlib.pyplot.figure" title="matplotlib.pyplot.figure" class="sphx-glr-backref-module-matplotlib-pyplot sphx-glr-backref-type-py-function"><a href="../../api/_as_gen/matplotlib.pyplot.figure.html#matplotlib.pyplot.figure" title="matplotlib.pyplot.figure" class="sphx-glr-backref-module-matplotlib-pyplot sphx-glr-backref-type-py-function"><span class="n">plt</span><span class="o">.</span><span class="n">figure</span></a></a><span class="p">()</span>

<span class="n">ax</span> <span class="o">=</span> <a href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.gca" title="matplotlib.figure.Figure.gca" class="sphx-glr-backref-module-matplotlib-figure sphx-glr-backref-type-py-method"><a href="../../api/_as_gen/matplotlib.figure.Figure.html#matplotlib.figure.Figure.gca" title="matplotlib.figure.Figure.gca" class="sphx-glr-backref-module-matplotlib-figure sphx-glr-backref-type-py-method"><span class="n">fig</span><span class="o">.</span><span class="n">gca</span></a></a><span class="p">(</span><span class="n">projection</span><span class="o">=</span><span class="s1">&#39;3d&#39;</span><span class="p">)</span>

<a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="numpy.ndarray" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-class sphx-glr-backref-instance"><a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="numpy.ndarray" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">X</span></a></a><span class="p">,</span> <a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="numpy.ndarray" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-class sphx-glr-backref-instance"><a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="numpy.ndarray" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">Y</span></a></a><span class="p">,</span> <a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="numpy.ndarray" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-class sphx-glr-backref-instance"><a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="numpy.ndarray" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">Z</span></a></a> <span class="o">=</span> <span class="n">axes3d</span><span class="o">.</span><span class="n">get_test_data</span><span class="p">(</span><span class="mf">0.05</span><span class="p">)</span>

<a href="../../api/contour_api.html#matplotlib.contour.QuadContourSet" title="matplotlib.contour.QuadContourSet" class="sphx-glr-backref-module-matplotlib-contour sphx-glr-backref-type-py-class sphx-glr-backref-instance"><a href="../../api/contour_api.html#matplotlib.contour.QuadContourSet" title="matplotlib.contour.QuadContourSet" class="sphx-glr-backref-module-matplotlib-contour sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">cset</span></a></a> <span class="o">=</span> <a href="../../api/_as_gen/matplotlib.axes.Axes.contourf.html#matplotlib.axes.Axes.contourf" title="matplotlib.axes.Axes.contourf" class="sphx-glr-backref-module-matplotlib-axes sphx-glr-backref-type-py-method"><a href="../../api/_as_gen/matplotlib.axes.Axes.contourf.html#matplotlib.axes.Axes.contourf" title="matplotlib.axes.Axes.contourf" class="sphx-glr-backref-module-matplotlib-axes sphx-glr-backref-type-py-method"><span class="n">ax</span><span class="o">.</span><span class="n">contourf</span></a></a><span class="p">(</span><a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="numpy.ndarray" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-class sphx-glr-backref-instance"><a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="numpy.ndarray" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">X</span></a></a><span class="p">,</span> <a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="numpy.ndarray" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-class sphx-glr-backref-instance"><a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="numpy.ndarray" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">Y</span></a></a><span class="p">,</span> <a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="numpy.ndarray" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-class sphx-glr-backref-instance"><a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.html#numpy.ndarray" title="numpy.ndarray" class="sphx-glr-backref-module-numpy sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">Z</span></a></a><span class="p">,</span> <span class="n">cmap</span><span class="o">=</span><a href="../../api/_as_gen/matplotlib.colors.LinearSegmentedColormap.html#matplotlib.colors.LinearSegmentedColormap" title="matplotlib.colors.LinearSegmentedColormap" class="sphx-glr-backref-module-matplotlib-colors sphx-glr-backref-type-py-class sphx-glr-backref-instance"><a href="../../api/_as_gen/matplotlib.colors.LinearSegmentedColormap.html#matplotlib.colors.LinearSegmentedColormap" title="matplotlib.colors.LinearSegmentedColormap" class="sphx-glr-backref-module-matplotlib-colors sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">cm</span><span class="o">.</span><span class="n">coolwarm</span></a></a><span class="p">)</span>

<a href="../../api/_as_gen/matplotlib.axes.Axes.clabel.html#matplotlib.axes.Axes.clabel" title="matplotlib.axes.Axes.clabel" class="sphx-glr-backref-module-matplotlib-axes sphx-glr-backref-type-py-method"><a href="../../api/_as_gen/matplotlib.axes.Axes.clabel.html#matplotlib.axes.Axes.clabel" title="matplotlib.axes.Axes.clabel" class="sphx-glr-backref-module-matplotlib-axes sphx-glr-backref-type-py-method"><span class="n">ax</span><span class="o">.</span><span class="n">clabel</span></a></a><span class="p">(</span><a href="../../api/contour_api.html#matplotlib.contour.QuadContourSet" title="matplotlib.contour.QuadContourSet" class="sphx-glr-backref-module-matplotlib-contour sphx-glr-backref-type-py-class sphx-glr-backref-instance"><a href="../../api/contour_api.html#matplotlib.contour.QuadContourSet" title="matplotlib.contour.QuadContourSet" class="sphx-glr-backref-module-matplotlib-contour sphx-glr-backref-type-py-class sphx-glr-backref-instance"><span class="n">cset</span></a></a><span class="p">,</span> <span class="n">fontsize</span><span class="o">=</span><span class="mi">9</span><span class="p">,</span> <span class="n">inline</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>

<a href="../../api/_as_gen/matplotlib.pyplot.show.html#matplotlib.pyplot.show" title="matplotlib.pyplot.show" class="sphx-glr-backref-module-matplotlib-pyplot sphx-glr-backref-type-py-function"><a href="../../api/_as_gen/matplotlib.pyplot.show.html#matplotlib.pyplot.show" title="matplotlib.pyplot.show" class="sphx-glr-backref-module-matplotlib-pyplot sphx-glr-backref-type-py-function"><span class="n">plt</span><span class="o">.</span><span class="n">show</span></a></a><span class="p">()</span>

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