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Re: Color conversions [message #61245 is a reply to message #61244] Thu, 10 July 2008 09:17 Go to previous message
David Fanning is currently offline  David Fanning
Messages: 11724
Registered: August 2001
Senior Member
MichaelT writes:

> here is something I'd like to do and I do not know how, despite some
> lengthy searches and trials:
>
> Say, I have displayed an image in a window and plotted some other
> things on top. All that with a certain color table. Later, I want to
> switch to a different color table and display the very content with
> the new color table. I do not want to do all the displaying and
> plotting, again. Just read the content of the window an display it
> with another color table. So I tried something with TVRD - without any
> success.
> How would you do it? Is there a simple way?

Not only is there no simple way, I think there is basically
no way, unless you maybe are still using an 8-bit display.

But, typically, people solve this problem by loading a new
color table and re-displaying the graphic. :-)

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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