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Newsgroups: comp.graphics.apps.gnuplot
Date: Tue, 20 Sep 2022 05:18:12 -0700 (PDT)
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Subject: Re: mapping z-values as point colors onto 2D plot
From: Alicreance Hiyadutuje <hiyadutujea@gmail.com>
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Xref: csiph.com comp.graphics.apps.gnuplot:4491

On Wednesday, October 24, 2007 at 10:33:10 PM UTC+2, Hallmarc wrote:
> On Oct 24, 3:41 pm, Hans-Bernhard Br=C3=B6ker <HBBroe...@t-online.de>
> wrote:
> > Hallmarc wrote:
> > > Unfortunately, there's something I'm not understanding about pm3d:
> >
> > > gnuplot> splot "socks.dat" using 1:3:4 with pm3d
> > > Warning: Single isoline (scan) is not enough for a pm3d plot.
> > > Hint: Missing blank lines in the data file? See 'help pm3d' and
> > > FAQ.
> >
> > > socks.dat is a file with several hundred thousand rows, four columns
> > > (column 2 is not used), and no breaks between rows.
> >
> > ... which means it doesn't describe any surface, so pm3d can't plot it
> > as a coloured surface. Looks like what you really want is a plot of
> > coloured points, i.e.:
> >
> > set view map
> > splot 'data' u 1:2:(0.0):3 with points palette
> >
> > Either that, or you should insert the missing breaks into the data file=
.
> That did the trick, thanks! I guess the third coordinate of 0.0 just
> basically push everything up against a 2D plane...excellent.
In my case, I was missing only "with points palette".