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<div class="section" id="d-scatterplot">
<span id="sphx-glr-gallery-mplot3d-scatter3d-py"></span><h1>3D scatterplot<a class="headerlink" href="#d-scatterplot" title="Permalink to this headline">¶</a></h1>
<p>Demonstration of a basic scatterplot in 3D.</p>
<img alt="../../_images/sphx_glr_scatter3d_001.png" class="align-center" src="../../_images/sphx_glr_scatter3d_001.png" />
<div class="highlight-python"><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="kn">as</span> <span class="nn">plt</span>
<span class="kn">import</span> <span class="nn">numpy</span> <span class="kn">as</span> <span class="nn">np</span>
<span class="c1"># Fixing random state for reproducibility</span>
<a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.random.seed.html#numpy.random.seed" title="View documentation for numpy.random.seed"><span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">seed</span></a><span class="p">(</span><span class="mi">19680801</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">randrange</span><span class="p">(</span><span class="n">n</span><span class="p">,</span> <span class="n">vmin</span><span class="p">,</span> <span class="n">vmax</span><span class="p">):</span>
<span class="sd">'''</span>
<span class="sd"> Helper function to make an array of random numbers having shape (n, )</span>
<span class="sd"> with each number distributed Uniform(vmin, vmax).</span>
<span class="sd"> '''</span>
<span class="k">return</span> <span class="p">(</span><span class="n">vmax</span> <span class="o">-</span> <span class="n">vmin</span><span class="p">)</span><span class="o">*</span><a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.random.rand.html#numpy.random.rand" title="View documentation for numpy.random.rand"><span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><span class="n">rand</span></a><span class="p">(</span><span class="n">n</span><span class="p">)</span> <span class="o">+</span> <span class="n">vmin</span>
<span class="n">fig</span> <span class="o">=</span> <a href="../../api/_as_gen/matplotlib.pyplot.figure.html#matplotlib.pyplot.figure" title="View documentation for matplotlib.pyplot.figure"><span class="n">plt</span><span class="o">.</span><span class="n">figure</span></a><span class="p">()</span>
<span class="n">ax</span> <span class="o">=</span> <span class="n">fig</span><span class="o">.</span><span class="n">add_subplot</span><span class="p">(</span><span class="mi">111</span><span class="p">,</span> <span class="n">projection</span><span class="o">=</span><span class="s1">'3d'</span><span class="p">)</span>
<span class="n">n</span> <span class="o">=</span> <span class="mi">100</span>
<span class="c1"># For each set of style and range settings, plot n random points in the box</span>
<span class="c1"># defined by x in [23, 32], y in [0, 100], z in [zlow, zhigh].</span>
<span class="k">for</span> <span class="n">c</span><span class="p">,</span> <span class="n">m</span><span class="p">,</span> <span class="n">zlow</span><span class="p">,</span> <span class="n">zhigh</span> <span class="ow">in</span> <span class="p">[(</span><span class="s1">'r'</span><span class="p">,</span> <span class="s1">'o'</span><span class="p">,</span> <span class="o">-</span><span class="mi">50</span><span class="p">,</span> <span class="o">-</span><span class="mi">25</span><span class="p">),</span> <span class="p">(</span><span class="s1">'b'</span><span class="p">,</span> <span class="s1">'^'</span><span class="p">,</span> <span class="o">-</span><span class="mi">30</span><span class="p">,</span> <span class="o">-</span><span class="mi">5</span><span class="p">)]:</span>
<span class="n">xs</span> <span class="o">=</span> <span class="n">randrange</span><span class="p">(</span><span class="n">n</span><span class="p">,</span> <span class="mi">23</span><span class="p">,</span> <span class="mi">32</span><span class="p">)</span>
<span class="n">ys</span> <span class="o">=</span> <span class="n">randrange</span><span class="p">(</span><span class="n">n</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">100</span><span class="p">)</span>
<span class="n">zs</span> <span class="o">=</span> <span class="n">randrange</span><span class="p">(</span><span class="n">n</span><span class="p">,</span> <span class="n">zlow</span><span class="p">,</span> <span class="n">zhigh</span><span class="p">)</span>
<span class="n">ax</span><span class="o">.</span><span class="n">scatter</span><span class="p">(</span><span class="n">xs</span><span class="p">,</span> <span class="n">ys</span><span class="p">,</span> <span class="n">zs</span><span class="p">,</span> <span class="n">c</span><span class="o">=</span><span class="n">c</span><span class="p">,</span> <span class="n">marker</span><span class="o">=</span><span class="n">m</span><span class="p">)</span>
<span class="n">ax</span><span class="o">.</span><span class="n">set_xlabel</span><span class="p">(</span><span class="s1">'X Label'</span><span class="p">)</span>
<span class="n">ax</span><span class="o">.</span><span class="n">set_ylabel</span><span class="p">(</span><span class="s1">'Y Label'</span><span class="p">)</span>
<span class="n">ax</span><span class="o">.</span><span class="n">set_zlabel</span><span class="p">(</span><span class="s1">'Z Label'</span><span class="p">)</span>
<a href="../../api/_as_gen/matplotlib.pyplot.show.html#matplotlib.pyplot.show" title="View documentation for matplotlib.pyplot.show"><span class="n">plt</span><span class="o">.</span><span class="n">show</span></a><span class="p">()</span>
</pre></div>
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