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Re: IDL postscript graphics [message #45882 is a reply to message #45748]

Mon, 10 October 2005 06:16

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

IDLmastertobe writes:

> Thanks for your reply mark, i changed the code to yours. It it a lot
> cleaner, but it is still a white plane without any color like before. i
> am not sure if it is because something wrong with sState.oView, but i have
> not found any obvious errors yet. Is there anything that is potentially
> blocking the image from porting out?

Given that we now have everything over into object graphics,
I think the problem isn't that the image is not being displayed,
but that it is being displayed too well. Most of the time, in
object graphics, one's first attempt at displaying an image
results in a black window. This is not an empty window, it is
a single image pixel, blown up very, very large. The problem
is that the user forgot to scale the image object into the
coordinate system of the view object. (If you haven't learned
this yet, the object graphics system is VERY low level. You
have to do *everything* yourself.)

When Mark said that the code "could work", he knew as well
as I did that the chances were very, very small, given what
we know about your specific problem. But, at the very least
you are going to have to match the DIMENSIONS and UNITS of
your view object in the clipboard object if you are going to see
output that looks anything like what you see in your
display window.

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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[Message index]

		IDL postscript graphics By: IDLmastertobe on Fri, 07 October 2005 15:42
		Re: IDL postscript graphics By: Karl Schultz on Mon, 10 October 2005 08:32
		Re: IDL postscript graphics By: David Fanning on Mon, 10 October 2005 06:16
		Re: IDL postscript graphics By: IDLmastertobe on Sun, 09 October 2005 22:35
		Re: IDL postscript graphics By: Mark Hadfield on Sun, 09 October 2005 19:16

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