> Two questions are (Linux platform)
> 1, how to save a ploting as gif or jpg?
> 2, how to change the plot back groud color?
> I have eps files, which give me black color on
> background when printed out,
> Thank you,
Alan W. Irwin
For modern PLplot we do have -dev gif implemented as part of the gd device driver, but that is deprecated and will be eventually removed because all the gd related devices are poorly maintained. So a better alternative now is to use a modern png device, e.g., -dev pngcairo or -dev pngqt and then convert the result to gif with ImageMagick convert (if for some strange reason you prefer gif to png).
Again, that is available for -dev jpeg as part of the gd device driver. However, for same reason use -dev jpgqt instead or else convert a png.
Use -bg command-line option. Note with modern PLplot you are also allowed totally or partially transparent backgrounds.