[ferret_users] How to remove the white spots from the postscript figures?

["C. Shaji" <cshaji@xxxxxxxxxxxxxxxxxxxxx>]

Hello All,
When I created the postscript figures using the following command I always
got white spots in the figures.

sp Fprint -o file.ps metafile.plt

I even converted the ps files to pdf and eps also, but the white spots
still remain there.

Can somebody suggest me some useful tips to remove these from the figures?

Thanks in advance,
C. Shaji.