SOM Toolbox Online documentation http://www.cis.hut.fi/projects/somtoolbox/

som_projections

[cPCAarg, Pdata, Pproto] = som_projections(D,sM,bmus)

 SOM_PROJECTIONS Makes different kinds of projections for the data and the prototypes.

 [cPCAarg, Pdata, Pproto] = som_projections(D,sM,[bmus])

      sD      (struct) data struct
              (matrix) size dlen x dim
      sM      (struct) map struct
              (matrix) size munits x dim: prototype vectors
      [bmus]  (vector) BMU for each data vector (calculated if not specified)

      cPCAarg (cell array) PCA arguments: {V, me, l} from pcaproj function
      Pdata   (matrix) size dlen x 7, consisting of 3 projection coordinates from PCA, 
                       1 residual from the rest of the PCA-projection coordinates, 
                       and 3 color components 
      Pproto  (matrix) size dlen x 7, consisting of 3 projection coordinates from PCA, 
                       1 residual from the rest of the PCA-projection coordinates, 
                       3 color components, and 3 projection coordinates from CCA

 See also  PCAPROJ, CCA, SAMMON, SOM_PROJECTIONS_PLOT, SOM_COLORING, SOM_COLORCODE, 
           SOM_CLUSTERCOLOR, SOM_KMEANCOLOR.



[ SOM Toolbox online doc ]