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Re: Colorbar with fixed level and color [message #84288 is a reply to message #81429]

Tue, 07 May 2013 05:42

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Sam writes:

> Sorry,I forgot to mention about contour command I used.
>
> contour,z,levels=level,c_colors=colour,/cell_fill, c_linestyle=(level lt 0),/overplot,/noerase
>
> Here I find around zero lines the colour shift in one colour to that from colourbar.

Well, again, this confuses me. Why are the keywords OVERPLOT and NOERASE
being used together? Why CELL_FILL, since this is normally only used
with map projections, and there is no hint of a map projection here?

You loaded colors starting at color index 2 (Bottom=2), but your
contour plot is looking for colors starting at color index 0, and your
color bar is looking for the same colors at color index 1 (Bottom=1).

I'd say there is a pretty darn good chance your colors might be off a
little bit. :-)

If you match all this up, you should be good to go.

Another place to look for answers is in the Contour Plot chapter of my
book, available here:

http://www.idlcoyote.com/books/tg/samples/tg_chap5.pdf

Cheers,

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

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[Message index]

		Colorbar with fixed level and color By: Rosie on Fri, 14 September 2012 04:11
		Re: Colorbar with fixed level and color By: David Fanning on Mon, 06 May 2013 16:00
		Re: Colorbar with fixed level and color By: Rosie on Tue, 07 May 2013 05:10
		Re: Colorbar with fixed level and color By: David Fanning on Wed, 08 May 2013 04:59
		Re: Colorbar with fixed level and color By: Rosie on Wed, 08 May 2013 04:09
		Re: Colorbar with fixed level and color By: David Fanning on Tue, 07 May 2013 05:42

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