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Re: reverse color table [message #72437]

Sun, 12 September 2010 04:12

tegus
Messages: 20
Registered: October 2008

Junior Member

On Sep 11, 10:21 am, David Fanning <n...@dfanning.com> wrote:
> tegus writes:
>> I think this will accomplish the same thing without reversing the
>> color table -- just use so me of the PLOT keywords instead:
>
>> LoadCT, 0
>> Plot, Y, BACKGROUND=255, COL=0
>
>> You can also use other color tables if you want to use colors other
>> than black and white.
>
> The suggestion to use keywords is correct. But the
> suggestion to use these particular indices will
> prove disastrous if you want to create a
> PostScript file with this command. Instead,
> you should load drawing colors anywhere
> *except* indices 0 and 255.
>
> A program like FSC_COLOR will take care of
> this detail (and many others) for you:
>
> Plot, data, BACKGROUND=FSC_Color('white'), $
> COLOR=FSC_Color('black')
>
> FSC_COLOR is a Coyote Library routine.
>
> 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.")

David,

Thanks for the tip regarding PostScript!!

Bill

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[Message index]

		Re: reverse color table By: tegus on Sun, 12 September 2010 04:12
		Re: reverse color table By: David Fanning on Sat, 11 September 2010 07:21
		Re: reverse color table By: tegus on Sat, 11 September 2010 05:39

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