PSCONTOR generates a postscript contour plot of z(x,y), 
where z is known on a regularly spaced x-y grid.

The sources for PSCONTOR are pscontor.f and pslib.f.

The input plot file format consists of the following data:

Card 1 - fname - title information (< 162 characters)
Card 2 - ix,iy,xmin,ymin,dx,dy - ix and iy are the number of
         grid points in the x and y directions. xmin and 
		 ymin are the the minimum x and y values. dx and dy
		 are the spacing of the grid points in the x and y
		 directions. 
Card 3 - xname, yname - names of the x and y variables
         (8 chracters each, no separation).
Card 4 - (z(i,j),i=1,ix),j=1,iy) the values of the potentials
         at the grid points (z(1,1) is at xmin, ymin).