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IDL 8.0 image() scaling [message #75446]

Tue, 08 March 2011 08:32

Henry Throop
Messages: 3
Registered: March 2011

Junior Member

Let's say I've got a small 2D array, and I want to use IDL 8.0
graphics to display it, filling up the whole window. Certainly there
must be some simple way to do this, but I can't figure it out! I can
do

IDL> im = image(dist(20))

but this just puts the tiny image at the screen center, unscaled (one
pixel per pixel). I can then use

IDL> im.scale, 20, 20

to zoom it. Or I can use the mouse and grab the handles, but of course
I don't want to do that every time. In earlier versions I'd always use
rebin(), but it seems like IDL 8.0 *should* do this properly by
itself. In fact, image() will automatically scale *down* the image if
it's larger than the screen size; what I want is for it to also scale
*up* the image when it's too small.

How do I do this? None of the seemingly obvious combinations of /
INTERPOLATE, IMAGE_DIMENSIONS, DIMENSIONS, etc. do it.

Thanks,
-Henry

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IDL 8.0 image() scaling

By: Henry Throop on Tue, 08 March 2011 08:32

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