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Re: Data to Device coordinates in Objects [message #54534 is a reply to message #54439]

Mon, 18 June 2007 08:19

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Gaurav writes:

> Hi Folks, I must be missing out something very fundamental-please bail
> me out. What I want to do is to get the device coordinates of a
> particular lat/lon value of a spherical object that is displayed in a
> object window concocted out of a Draw Widget. None of the procedures
> like COORD_CONV, CV_COORD etc. seem to be appropriate.

If spherical geometry seems "fundamental" to you, you
are a better man than I, my friend. :-)

I *really* don't want to get in the middle of this, but
I presume you "data" coordinate system is some kind of
map projection set up with the MAP_PROJ_** routines, right?
So you can go back and forth between 3D and 2D coordinates
fairly easily. Otherwise, I'm not sure you have a prayer.
I know I wouldn't.

Cheers,

David

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

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[Message index]

		Data to Device coordinates in Objects By: Gaurav on Mon, 18 June 2007 03:13
		Re: Data to Device coordinates in Objects By: Gaurav on Tue, 19 June 2007 01:03
		Re: Data to Device coordinates in Objects By: David Fanning on Mon, 18 June 2007 08:19

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