 Usage:  plotface(obsrv,q,fl,fc)  
 
 Input:

  obsrv                  n x p matrix with the observations 
                         
  q                      1 x 36 matrix with the assignments to the face parts 
                         
  fl                     scalar, faces per line 
                         
  fc                     scalar, faces per column 
                         
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(C) MD*TECH Method and Data Technologies, 17.8.2000
