[Gnuplot-info] Coloring multiple-curve `splot's

[<lud...@la...>]

Hi,

I'm plotting several surfaces with `splot' on a single graph.  I would
like to color those surfaces, or the lines that make them up, according
to what they represent (i.e., not according to their height, as `pm3d'
does).  IOW, I would like to have each surface painted with its own
color.

In color PostScript output, this is what happens by default.  However,
in black & white PostScript, GNUplot automatically uses variants of
dashed and dotted lines instead of colored lines, which I would like to
avoid.  Specifying `with palette' (and having a single-color palette)
doesn't do the trick since there can be only one palette at a time, for
all surfaces.

Any idea?

Thanks,
Ludovic.