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Re: GetValueAtLocation() method [message #84806 is a reply to message #84803]

Tue, 11 June 2013 15:58

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

markjamie@gmail.com writes:

> When using p=surface(/test) together with p.getvalueatlocation(x, y), where x and Y are credible values it all works ok. When extending it's use to a real world example I encounter various errors.

Haha! I really must be getting old, because this doesn't surprise me at
all. In my experience, *especially* with object graphics examples, the
published examples almost always assume axes that start at 0. In truth,
I understand the mindset, but I have been burned so many times myself, I
have learned to check this kind of thing. Well, most of the time,
anyway.

In any case, function graphics programs, at least in my hands, have not
worked well with real-world data on at least one or two occasions. :-)

http://www.idlcoyote.com/ng_tips/onion.php

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]

		GetValueAtLocation() method By: markjamie on Tue, 11 June 2013 15:13
		Re: GetValueAtLocation() method By: David Fanning on Tue, 11 June 2013 15:58
		Re: GetValueAtLocation() method By: markjamie on Tue, 11 June 2013 23:50
		Re: GetValueAtLocation() method By: David Fanning on Wed, 12 June 2013 06:19

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