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Re: TVCRS and Widgets
| Re: TVCRS and Widgets [message #29030] |
Tue, 29 January 2002 19:31 |
Craig Markwardt
Messages: 1869
Registered: November 1996
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Senior Member |
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Kelly Dean <krdean@lamar.colostate.edu> writes:
> A user would like to input the x and y values or latitude and longitude
> information to move the cursor to the desire location on a image
> displayed on the screen.
>
> I was using TVCRS to move the cursor in a WIDGET_DISPLAY with
> information entered by the user. This works great as long as the x- and
> y-position are appearing on the screen. If the position is not showing,
> then IDL seems to go into an endless loop and prevents any further
> operations. The WIDGET_DISPLAY holds a 1024x1024 image, but the screen
> only shows 800x600 with scroll bars on the GUI display to view the rest
> of the image.
Is this another case of "Doctor, it hurts when I do this?" :-) How
about checking ahead of time to be sure the requested point is
in view before moving the cursor?
Craig
--
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Craig B. Markwardt, Ph.D. EMAIL: craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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