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Re: How to Get Started with the Z-Buffer [message #51954 is a reply to message #51951]

Tue, 19 December 2006 11:55

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

rchughes@gmail.com writes:

> The reason I am using the Z buffer is because the routine that I took
> it from either displays the plots in an X window on the screen or
> creates a postscript file. Creating the postscript file is just an
> option that I have included in the routine.
>
> Before I started to incorporate the Z buffer I was writing it straight
> to the postscript device like you suggested (it is much easier I must
> say) but for some reason I can't run it in the cron because IDL needs
> access to X Windows. I don't know why.

I think this is the place to start your investigations.
Is there some kind of DEVICE command somewhere you aren't
telling us about? Are you trying to find out what fonts
are available? How many colors are available? Have you
tried setting your device to "NULL" and seeing what happens?

> I thought IDL might need Xwin
> to plot so after reading several posts on this newsgroup it pointed me
> towards using the Z buffer. So I've tried to have all the plots write
> to the Z buffer before sending it to either Xwin or Postscript but
> current attempts have been unsuccessful.

It's not unusually to get bum advice when reading
this newsgroup. I'd set my filters so the only articles
you see are those by JD Smith. :-)

> Would you stll suggest to send it straight to postscript?

Yes, there is nothing about writing to PostScript that will
confuse your cron job. You will have to look for the problem
elsewhere.

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: How to Get Started with the Z-Buffer By: David Fanning on Wed, 20 December 2006 07:01
		Re: How to Get Started with the Z-Buffer By: Ryan. on Wed, 20 December 2006 06:55
		Re: How to Get Started with the Z-Buffer By: peter.albert@gmx.de on Wed, 20 December 2006 00:41
		Re: How to Get Started with the Z-Buffer By: Kenneth Bowman on Tue, 19 December 2006 13:18
		Re: How to Get Started with the Z-Buffer By: David Fanning on Tue, 19 December 2006 11:55
		Re: How to Get Started with the Z-Buffer By: rchughes on Tue, 19 December 2006 11:41
		Re: How to Get Started with the Z-Buffer By: David Fanning on Tue, 19 December 2006 10:31

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