som_dmatminima

minima = som_dmatminima(sM,U,Ne)

SOM_DMATMINIMA Find clusters based on local minima of U-matrix.

 minima = som_dmatminima(sM,[U],[Ne])

  Input and output arguments ([]'s are optional):
   sM         (struct) map struct
   U          (matrix) the distance matrix from which minima is
                       searched from 
                       size msize(1) x ... x msize(end) or 
                            2*msize(1)-1 x 2*msize(2)-1 or 
                            munits x 1
   Ne         (matrix) neighborhood connections matrix

   minima     (vector) indeces of the map units where locla minima of
                       of U-matrix (or other distance matrix occured)
   
 See also KMEANS_CLUSTERS, SOM_CLLINKAGE, SOM_CLSTRUCT.