Re: [Gnuplot-info] Coloring surfaces between contour lines

[Thomas S. <t.s...@fz...>]

define a color palette with color steps instead of a gradient, e.g.:

set palette model RGB defined (0 "green", 1 "green", 1 "yellow", 2 "yellow",
2 "red", 3 "red" )
test palette

or

set palette model RGB defined (0 "green", 1 "yellow", 2 "red")
set palette maxcolors 3
test palette


mgraat wrote:
> 
> Hello all,
> 
> I am trying to find a way to color the surfaces between contourlines. I
> have already plotted the contourlines (see
> http://img262.imageshack.us/img262/40/exampleq.png), but cannot find a way
> to color the surfaces between them. For instance, if you look at the
> example picture, the areas which are bordered by the lightblue lines
> should have one color, those by the purple another, etc.
> 
> For reference, I created the contour lines as follows:
> 
> set pm3d map
> set nosurface
> set cntrparam bspline
> set contour
> set xrange [1:3.64]
> set yrange [0.09:0.96]
> unset colorbox
> unset key
> splot "results.dat" using ($5):($6):($1) notitle
> 
> The results.dat file is basically build up like this (colom 5 and 6 are X
> and Y, 1 is Z):
> 
> 85.45 1 1.2904819 0.7095181 1.01 0.1
> 85.68 1 1.2904819 0.7095181 1.01 0.17782794
> *snip*
> 
> 86.61 1 1.2904819 0.7095181 1.0150374 0.1
> 85.06 1 1.2904819 0.7095181 1.0150374 0.17782794
> *snip*
> 
> etc.
> 
> Is this in any way possible, or should I just post-process the image in a
> program like GIMP?
> 
> NB: pm3d map uses a gradient, which is not what I want.
> 
> Kind regards,
> 
> Michiel
> 
> 
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