The VCPLOT program reads the output from the VCHAM programs and plots cuts through the potential energy surfaces. It is a very simple program which writes the data to a file and calls gnuplot to first create a postcript file. The gv program is then called to plot this to screen.

To run the program simply type

vcplotXX input N
where input is the name of the file containing the data to be plotted and N is the number of the mode along which the cut is to be made. If the arguments are not given, the user is prompted for the file and mode no.

The input file can either be the .vcham file from a fit, or the .info database of ab initio data. In the former case

vcplotXX input.vcham N
the ab initio points along the cut together with curves from the fit are plotted. In the latter case
vcplotXX input.info N
only the ab initio points along the cut are plotted. If no type is given, the program assumes it is looking for a .vcham file.