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Re: display position arrays on an image [message #88792 is a reply to message #88790]

Thu, 19 June 2014 15:24

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

g.nacarts@gmail.com writes:

> I use the cgDrawVectors to make some position arrays of an image, and then plot them on a diagram. I was wondering if anyone knows how to plot these vectors on the top of the image instead of plotting them on a separate window.

Set the SAVE keyword on the cgImage command that displays the image.
This will establish the image "coordinate" system. (You may have to use
the XRange and YRange keywords to get this set up as you need it.)
cgDrawVectors will draw itself in whatever coordinate system has been
set up for it.

Cheers,

David

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

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[Message index]

		display position arrays on an image By: g.nacarts on Thu, 19 June 2014 13:52
		Re: display position arrays on an image By: g.nacarts on Thu, 19 June 2014 13:53
		Re: display position arrays on an image By: David Fanning on Thu, 19 June 2014 15:24
		Re: display position arrays on an image By: g.nacarts on Fri, 20 June 2014 04:54
		Re: display position arrays on an image By: David Fanning on Fri, 20 June 2014 09:32
		Re: display position arrays on an image By: g.nacarts on Sat, 21 June 2014 12:11
		Re: display position arrays on an image By: David Fanning on Sat, 21 June 2014 12:31
		Re: display position arrays on an image By: g.nacarts on Sat, 21 June 2014 12:43
		Re: display position arrays on an image By: g.nacarts on Sat, 21 June 2014 12:49
		Re: display position arrays on an image By: David Fanning on Sat, 21 June 2014 20:25
		Re: display position arrays on an image By: g.nacarts on Mon, 23 June 2014 03:43
		Re: display position arrays on an image By: Phillip Bitzer on Mon, 23 June 2014 08:54

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