f polyhedra in the same dimension.<p>
	    		Class: <tt>PolyUnion</tt></p>
</td>
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<td><tt>x</tt></td>
<td>
<p></p>A point at which the function should be evaluated. The point must be given as a column 
        real vector with the same dimension as the <tt>PolyUnion</tt>.<p>
	    		Class: <tt>double</tt></p>
</td>
</tr>
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<td><tt>function_name</tt></td>
<td>
<p></p>Name of the function to evaluate. The string must match one of the stored function names.
            If 