cloud of points; all the observations of the same class are represented by the same colour and are connected to the barycenter of their class
barycentermap(x,col1,col2,classes,charsize)
a matrix (n x p) or a Div structure
numbers of the columns chosen for the abscissa and the ordinate respectively
a vector (n x 1) containing integers (between 1 and k if k different classes )
size of the characters; by default=0