CCL: Molecular Plots

 In connection with some work in the field of semiempirical
 all-valence-electrons LCAO theory I wish to plot a 3-dimensional
 function corresponding to a weigthed sum of the AO densities:
                \         2
   F(x,y,z) =    >  W  Phi (x,y,z)
                /    i    i
 The sum is over AOs i in the basis set, W are the weight factors,
 and Phi the AO wavefunctions (e.g., STOs).  Is there any software
 available for conveniently producing contour maps etc. of a function
 of this type?
 Thanks for any hints.
 Jens >--<
 Department of Chemistry              Phone:  +45 46757711
 Roskilde University (RUC)            Fax:    +45 46757721
 POB 260, DK-4000 Roskilde, Denmark   E-Mail: JSL -8 at 8-