class</span> <span class="nc">MapperGraph</span><span class="p">(</span><span class="n">ReebGraph</span><span class="p">):</span>
<span class="w">    </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd">    A mapper graph structure. This inherits the properties of the Reeb graph in that it is a graph with a function given on the vertices, but with some additional requirements.</span>

<span class="sd">    - The values are integers in some range, [n_low, n_low+1, \cdots, n_high], although we co