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Re: question about plot contours over a color figure [message #48920 is a reply to message #48903]

Thu, 01 June 2006 16:29

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

yinghui writes:

> I am wondering what is wrong here, why I need two contour lines
> commands to get the contoure lines come up?

You can't both establish the contour data space AND
overplot the contour lines (OVERPLOT keyword) on the
same command. OVERPLOT assumes a data space is already
established. (It is similar to PLOTS in this regard.)

I would use a CONTOUR with NODATA and [XY]STYLE=5 keywords
to establish the data coordinate space. Then use the CONTOUR
command with OVERPLOT to draw the contour lines, if that is
what you want to do.

IMGDISP or TVIMAGE will make this a WHOLE lot easier for you! :-)

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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		Re: question about plot contours over a color figure By: manodeep@gmail.com on Fri, 02 June 2006 15:49
		Re: question about plot contours over a color figure By: David Fanning on Thu, 01 June 2006 16:29

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