colored figure representing observations by the identifier of their class
coloredmap(x,col1,col2,startpos,endpos,(labcol1),(labcol2)
a Div structure for which the labels x.i identify the class of each observation
columns of x.d chosen for the abscissa and the ordinate respectively
range within the strings of x.i which identifies the class of each observation
labels of the abscissa and the ordinate respectively