[ncl-talk] [ncarg-talk] [6.4.0 version] Bug : Categorical Snow always null

[Mary Haley]

​Dear Sebastien,

In the future please post NCL questions / issues to ncl-talk at ucar.edu.  The
ncarg-talk at ucar.edu email list is for NCAR Graphics users, and is not an
active group.

http://mailman.ucar.edu/mailman/listinfo/ncl-talk

​Without having access to the dataset, it is hard for us to debug this
problem. It would help, then, if you could provide more information about
the variable, like what kind of metadata it has.

Do you get any kind of error from ncl_filedump?

Could you run the short NCL script below, and send me the output from
running it, using both NCL V6.3.0 and V6.4.0, including any error messages:

a = addfile("20122017_15.grb","r")
csnow = a->CSNOW_GDS0_SFC
printVarSummary(csnow)
printMinMax(csnow,0)
print(num(ismissing(csnow)))

Finally, is there some place we can download this file, or a similar one,
from?

Thanks,

--Mary

On Wed, Jan 3, 2018 at 1:49 AM, Sébastien POITEVIN <
sebastien.poitevin at meteoconsult.com> wrote:

> Hi all,
>
> When we read "Categorical Snow" with NCL 6.4.0 version (ncl_filedump -v
> CSNOW_GDS0_SFC 20122017_15.grb or with 'PrintMinMax' command), we have
> always null value (min and max value = 0)  whereas we have no problem when
> we read the same grib file with the 6.3.0 version (min = 0 and max = 1).
>
> Grib files are produced by WRF-NMM (version V3.7.1) and UPPV3.0.
>
> Our system is "3.16.0-4-amd64 #1 SMP Debian 3.16.43-2+deb8u5 (2017-09-19)
> x86_64 GNU/Linux"
>
> Unfortunately I cannot send you a WRF grib file because it is too large.
>
> Thanks for your help.
>
> --
>
> _______________________________________________
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> ncarg-talk at ucar.edu
> http://mailman.ucar.edu/mailman/listinfo/ncarg-talk
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>
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