[ncl-talk] NCL giving empty pdf plots

Mary Haley haley at ucar.edu
Tue Oct 17 14:52:35 MDT 2017


Hi Ronald,

There could be many reasons for the lack of a plot:

   - Your script is exiting with an error before it even gets to the part
   that draw the graphics.
   - You set res at gsnDraw and res at gsnFrame to False, but then didn't call
   "draw" and "frame" yourself
   - Your data is constant or all missing
   - Your data has NaNs (not-a-number)
   - Your lat/lon values are not in the same range as the area of the map
   you are trying to plot over.


We don't have enough information.

   - Did you get any error messages?
   - What exactly do you mean by an "empty" PDF?  Do you mean a PDF that
   was 0 bytes in size?  Or, did you get a partial plot but without any data?
   - What was different about the experiments that you ran today, compared
   to when they worked before?

If you are still not sure why there's no plot, can you provide us with the
script and data so we can run it here? You can use our ftp site, and you
can email me offline if you don't want to share this publicly:

http://www.ncl.ucar.edu/ftp_files.shtml

Thanks,

--Mary




On Tue, Oct 17, 2017 at 8:40 AM, Ronald Opio <opioronald123 at gmail.com>
wrote:

> Hello colleagues.
>
> I have been using ncl to plot my wrf output files and it has been working
> great. However, I have run some experiments today, and tried plotting them
> but ncl only generates empty pdfs.
>
> When I use my earlier generated files, ncl plots them well.
>
> What could be the problem?
>
> Ronald.
>
> --
> ------------------------------------------------------------
> ----------------------------------------------------
>
> *Ronald Opio - Meteorologist | Environment Scientist | Auto Enthusiast*
>
>
> **** **How the World looks, depends on where you are standing ****
>
>
>
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