;

           vol = <b>cspice_pltvol</b>( vrtces, plates );

           fprintf ( 'Expected volume =      1/6\n'        )
           fprintf ( 'Computed volume  =   %24.17e\n', vol )

   Matlab outputs:

      Expected volume =      1/6
      Computed volume  =    1.66666666666666657e-01

</pre><h4><a name="Particulars">Particulars</a></h4><pre>

   This routine computes the volume of a spatial region bounded by
   a set of triangular plates. If the plate set does not actually
   form the boundary of a spat