comp.lang.idl-pvwave archive: archive » Re: reverse color table

Home » Public Forums » archive » Re: reverse color table

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: reverse color table [message #72439 is a reply to message #72437]

Sat, 11 September 2010 07:21

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

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.")

Report message to a moderator

[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

Previous Topic:	Re: Locate pixels that fall within other pixel-geo search
Next Topic:	ENVI trying to open files from USGS/EROS

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Oct 08 19:51:07 PDT 2025

Total time taken to generate the page: 0.00603 seconds