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Re: 24 bit color depth confuses my color table
- Subject: Re: 24 bit color depth confuses my color table
- From: Reimar Bauer <r.bauer(at)fz-juelich.de>
- Date: Wed, 20 Jun 2001 17:40:40 +0200
- Newsgroups: comp.lang.idl-pvwave
- Organization: Forschungszentrum Juelich GmbH
- References: <3B30A70A.902B5EE5@desy.de>
- Xref: news.doit.wisc.edu comp.lang.idl-pvwave:25393
Daniel Luebbert wrote:
> I recently switched from IDL on Windows to IDL on Linux,
> and have some problems with my color tables.
> It seems that IDL cannot really cope with 24 bit color depth,
> at least not in a way that I would understand.
> So I followed the tips on David Fanning's web page, said
> tried all kinds of pseudo/true/direct color with all kinds of depths
> (8/16/24), but never got a satisfying result.
> I always get only 64 colors, and the color table seems completely chaotic (no smooth transition from blue via green to red...
> but arbitrary jumps in color from one color index to the next).
> Can anybody tell me the secret for using color on 24-bit Linux displays?
I posted at 8th of May the same question and Carsten shows me
If you like to read the whole requests please look
"Liam E. Gumley" wrote:
> Carsten Dominik wrote:
> > >>>>> "RB" == Reimar Bauer <email@example.com> writes:
> > RB> Reimar Bauer wrote:
> > >>
> > >> Hi,
> > >>
> > >> I hope someone on this group know this problem and is able to help.
> > >>
> > >> On one of my linux system I got always a monochrome color output
> > >> (grey scale) by idl. All other applications do have colors.
> > >>
> > >> I have three identical machines ( I believe ) and only one of them
> > >> has this failure.
> > This works for me, I got it from this group, but unfortunately I
> > forgot who the original author was. Put the following text in a
> > startup file, like .idlrc and set the environment IDL_STARTUP variable
> > to point to that file:
> > setenv IDL_STARTUP ~/.idlrc
> > if !version.os_family eq 'unix' then device, true_color=24
> > window, /free, /pixmap, colors=-10
> > wdelete, !d.window
> > device, decomposed=0, retain=2
> > device, get_visual_depth=depth
> > print, 'Display depth: ', depth
> > print, 'Color table size: ', !d.table_size
> The startup file shown is the one I use routinely on all my IDL
> platforms. If you want to use 8-bit display mode on a UNIX box, the
> first line becomes
> if !version.os_family eq 'unix' then device, pseudo_color=8
Institut fuer Stratosphaerische Chemie (ICG-1)
a IDL library at ForschungsZentrum Juelich
read something about linux / windows