Wanted: contour plot program



Brothers and Sisters,
   has anybody got a program/routine for doing contour plots.
 Preferably for Xwindows plus hardcopy output (Postscript).
 Your help will be appreciated.
 Florian Mueller-Plathe
 Laboratorium fuer Physikalische Chemie, ETH-Zentrum
 CH-8092 Zuerich, Switzerland
 Tel: -41-1-256 28 50, E-mail: fmp ^at^ igc.ethz.ch
 "Hipness is not a state of mind, it is a fact of life."
                           Julian "Cannonball" Adderley