This isn't map related, but I have faith in the remarkable degree of computer knowledge displayed on these boards. Now, I have an eps file with a graph and I'd like to extract a line from that file. Is there any way to do this straight from the file information? Basically, does anyone know how a line is encoded in the postscript file? Even better would be an application that can extract it. I've heard rumours that such an application exists, but it is currently beyond the extent of my Google searching.

Any and all help greatly appreciated.