Fred Henle's Contour Plotter
The image above is a simplified version (GIF format) of a contour plot
generated by the contour plotter "con", a program written by Fred Henle to create a
PostScript contour plot from a 2-D data set. You can view
the original
PostScript file (325Kb) from which this image was made.
The man page
for "con" will give you an idea how to use it.
To FTP a Unix version of the entire software package, click here.