| Re: Color changing dialog [message #15597 is a reply to message #15590] |
Fri, 28 May 1999 00:00  |
davidf
Messages: 2866
Registered: September 1996
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Senior Member |
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Tri VU KHAC (tvk@info.fundp.ac.be) writes:
> I write a little application which needs a color table in which two (or
> more) IDL's color tables are as the following description:
>
> Saying my color table has 256 color
> myCT[0 : n-1] = CompressCT(IDLCT1, n) ; linear
> compression of IDL's N-element color table into n-element color table (n
> <= 255)
> myCT[n : 255] = CompressCT(IDLCT2, 256-n) ; linear compression of
> IDL's N-element color table into (256-n)-element color table
>
> Does anyone implement this procedure or know where I can get it. If you
> have sth like XLoadCT of IDL, this' excellent !
You can download my XCOLORS program, an XLOADCT knock-off:
http://www.dfanning.com/programs/xcolors.pro
This program has several advantages that XLOADCT lacks.
One of the most important to me is that you can have
multiple programs on the display at the same time.
(No COMMON blocks. :-) This makes it possible for me
to have a color changing tool associated with individual
windows:
Window, Title='Image One Window'
LoadCT, 1, NColors=100, Bottom=100
TVScale, image1, Top=199, Bottom=100
XColors, Title='Image One Colors', NColors=100, Bottom=100
Window, Title='Image Two Window'
LoadCT, 3, NColors=100
TVScale, image2, Top=99
XColors, Title='Image Two Colors', NColors=100
The most important XCOLORS advantage is that it can notify
a widget program (via a widget event) when the color
tables change. This makes it possible to write programs
that update their colors automatically on 24-bit displays.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
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