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Groups > comp.graphics.apps.gnuplot > #539
| From | Christoph Bersch <usenet@bersch.net> |
|---|---|
| Newsgroups | comp.graphics.apps.gnuplot |
| Subject | Re: strange palette behavior for postscript terminal |
| Date | Wed, 17 Aug 2011 09:18:21 +0200 |
| Organization | GWDG, Goettingen |
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Hi Lucie,
On 17.08.2011 05:41, Lucie Jilkova wrote:
>
> i've got a problem with (probably) a palette settings using postscript
> terminal. I'm plotting a 2D map and i want to set a palette so that
> all bins with values equal to 0.0 are mapped by white color, and all
> the other (non-zero) values by some different color.
The terminals have a limited resolution, by default the postscript
terminal uses 8 bit, the lowest one is white, the rest is blue. That is
why also e.g. 0.001 is painted white.
The maximum resolution of the postscript terminal is 12 bit (from the
language specification), the cairo-terminals have higher resolution (16
or 32 bit?). To see this, reduce the number of colors with the wxt
terminal which gives you the same result as the postscript output:
reset
set view map
set terminal wxt
set palette model RGB defined \
(0.0 "white", 0.0 "white", 0.0 "blue", 1.0 "blue")\
maxcolors 2**8
splot '-' w image
0 0 0.0
0 1 0.1
0 2 0.01
1 0 0.001
1 1 0.0001
1 2 0.001
2 0 0.01
2 1 0.1
2 2 1.0
e
reset
Christoph
Back to comp.graphics.apps.gnuplot | Previous | Next — Previous in thread | Next in thread | Find similar
strange palette behavior for postscript terminal Lucie Jilkova <jilkoval@gmail.com> - 2011-08-16 20:41 -0700
Re: strange palette behavior for postscript terminal Christoph Bersch <usenet@bersch.net> - 2011-08-17 09:18 +0200
Re: strange palette behavior for postscript terminal Lucie Jilkova <jilkoval@gmail.com> - 2011-08-17 06:51 -0700
Re: strange palette behavior for postscript terminal sfeam <sfeam@users.sourceforge.net> - 2011-08-17 08:49 -0700
Re: strange palette behavior for postscript terminal Lucie Jilkova <jilkoval@gmail.com> - 2011-08-17 15:44 -0700
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