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Re: oplot - error in plotting to Z buffer only [message #14245 is a reply to message #14231]

Sat, 06 February 1999 00:00

J.D. Smith
Messages: 214
Registered: August 1996

Senior Member

Gwyn Fireman wrote:
>
> Well, I'm stumped.
>
> I have a routine to automatically generate a bunch o'gifs.
> Usually it works fine.
>
> On one set of data it fails with the error:
>
> % OPLOT: No valid points, must have at least 2 distinct points
>
> But, but - I *do* have points to plot!
> If I run this interactively I can re-enter the command after it gives
> the error, and it works fine. (But .con does not)
>
> AND if I plot to an X-window instead of to the Z-buffer (as I usually
> do when generating gifs) it runs fine.
>
> Has anyone seen a similar discrepancy?
> Is there something I need to know about the Z buffer?
>
> Thanks.
>
> --
> ---- Gwyn F. Fireman
> ---- General Sciences Corporation
> ---- MODIS Characterization Support Team
> ---- Gwyn.Fireman@gsfc.nasa.gov 301-352-2118

Not to denigrate David's Blue Moon theory, but I'll bet a nickel that
the data frame for which the routine fails is corrupt or somehow not
correctly read in. I've been down the road of blaming the Z-Buffer for
all my problems, only later to discover some more plausible error. Are
you *certain* all you changed was set_plot,'Z' to set_plot,'X'?

JD

--
J.D. Smith |*| WORK: (607) 255-5842
Cornell University Dept. of Astronomy |*| (607) 255-6263
304 Space Sciences Bldg. |*| FAX: (607) 255-5875
Ithaca, NY 14853 |*|

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[Message index]

		Re: oplot - error in plotting to Z buffer only By: Dick Jackson on Mon, 08 February 1999 00:00
		Re: oplot - error in plotting to Z buffer only By: wmc on Mon, 08 February 1999 00:00
		Re: oplot - error in plotting to Z buffer only By: J.D. Smith on Sat, 06 February 1999 00:00
		Re: oplot - error in plotting to Z buffer only By: davidf on Fri, 05 February 1999 00:00

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