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Re: Use of Cursor [message #78911 is a reply to message #78910]

Thu, 12 January 2012 05:32

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

DavePoreh writes:

> i am also interested to do so, and what i have in my mind is, how
> could we define a keyboard push (for instance ctrl+r) that every time
> we push that the cursor would be activated and ready to get x-y
> coordinates. Any suggestion?

Matlab?

Well, in theory, this could also be done in any object
oriented implementation in IDL. In fact, it is probably
already possible in IDL 8 graphics. I've built applications
in my Catalyst Library that allow the XY coordinates of
any object shown in the window to be reported. See,
for example, the DataViewer program, which can have up
to 64 images shown in the display window, each reporting
its own position and value as you move your cursor
over them.

All it requires is that an object "know" its position
in a graphics window, have some knowledge about its
own coordinate scaling, and have some capability of
being selected by the user.

I don't think the Cntl-R thing is every going to be
implemented, but gaining knowledge of the graphic in
the window is certainly possible someday, if not now.

Come to think of it, it would probably take 5 minutes
to implement something like this for cgWindow, if I
didn't have to worry about multiple plots in the
display window. :-)

Cheers,

David

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

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[Message index]

		Re: Use of Cursor By: David Fanning on Thu, 12 January 2012 05:43
		Re: Use of Cursor By: d.poreh on Thu, 12 January 2012 05:38
		Re: Use of Cursor By: David Fanning on Thu, 12 January 2012 05:32
		Re: Use of Cursor By: d.poreh on Thu, 12 January 2012 00:40
		Re: Use of Cursor By: Craig Markwardt on Wed, 11 January 2012 20:06

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