The operation selects the shape of the subgraphs for neurons.
Example: An organized TS-SOM is displayed with three types of the neurons' frames. The choice "rectangle" is the default value.
... NDA> mkgrp grp1 -s s1 NDA> layer grp1 -l 3 ... NDA> nshape grp1 circle ... NDA> nshape grp1 polygon ...