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Re: Z-Graphics Buffer Resolution [message #73175 is a reply to message #73174]

Thu, 28 October 2010 08:14

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Kenneth P. Bowman writes:

> Isn't this due to differences for the default values of
> !D.X_CH_SIZE and !D.Y_CH_SIZE for different devices?

Well, these are system variables, so they wouldn't change,
but there *is* something about the character size in the
Z-buffer that is different. A "different" default character
size, it seems to me. You can solve the problem either by
explicitly setting the CHARSIZE keyword (so you use those
system variables above), or by explicitly setting the plot
margins, so the plot region doesn't move around in character
size units.

I'm having some EXTREMELY interesting fun with the Z-buffer
this morning. If I set the buffer to use decomposed color,
and I write three orthogonal images into the buffer with
different color tables, then take a "picture" of the result:

picture = TVRD(True=3)

And display that, I get three small thumbnail images instead
of the one large image I want! I have NO idea at the moment
what the heck is going on here! :-(

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]

		Re: Z-Graphics Buffer Resolution By: Heinz Stege on Thu, 28 October 2010 11:15
		Re: Z-Graphics Buffer Resolution By: David Fanning on Thu, 28 October 2010 10:09
		Re: Z-Graphics Buffer Resolution By: Kenneth P. Bowman on Thu, 28 October 2010 09:38
		Re: Z-Graphics Buffer Resolution By: David Fanning on Thu, 28 October 2010 09:24
		Re: Z-Graphics Buffer Resolution By: David Fanning on Thu, 28 October 2010 09:19
		Re: Z-Graphics Buffer Resolution By: Heinz Stege on Thu, 28 October 2010 09:07
		Re: Z-Graphics Buffer Resolution By: David Fanning on Thu, 28 October 2010 08:37
		Re: Z-Graphics Buffer Resolution By: David Fanning on Thu, 28 October 2010 08:23
		Re: Z-Graphics Buffer Resolution By: David Fanning on Thu, 28 October 2010 08:14
		Re: Z-Graphics Buffer Resolution By: Kenneth P. Bowman on Thu, 28 October 2010 07:52
		Re: Z-Graphics Buffer Resolution By: David Fanning on Wed, 27 October 2010 13:37

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