[Met_help] [rt.rap.ucar.edu #100177] History for Question on how to read netcdf files with gen_vx_mask metplus wrapper

[Julie Prestopnik via RT]

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  Initial Request
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Hi metplus help,

Would you be able to point me to any examples of using gen_vx_mask with a netcdf input file with grid information and some polyline file? Also, is python embedding enabled for this tool? If so, any examples? I am using MET 10.0.0 and METplus-4.0.

I have been looking at this example https://metplus.readthedocs.io/en/latest/generated/met_tool_wrapper/GenVxMask/GenVxMask.html#sphx-glr-generated-met-tool-wrapper-genvxmask-genvxmask-py . However, when I try swapping in my netcdf file for “GEN_VX_MASK_INPUT_TEMPLATE = modeloutput.nc” then gen_vx_mask fails. My netcdf file does contain “lat” and “lon” variables defining a regular lat_lon grid, but I guess these fields are not read by gen_vx_mask in the same way grib files can be read. Would you mind pointing me to any examples on how this can be done.

Thanks,
Scott


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  Complete Ticket History
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Subject: Question on how to read netcdf files with gen_vx_mask metplus wrapper
From: Julie Prestopnik
Time: Wed Jun 09 15:48:17 2021

Hi Scott.

I see you are having trouble using a NetCDF file with Gen-Vx-Mask.  I
am
not an expert on this tool.  I was able to get some advice from a
colleague
who pointed me to this use case, which uses NetCDF input:
https://github.com/dtcenter/METplus/blob/main_v4.0/parm/use_cases/model_applications/space_weather/GenVxMask_fcstGloTEC_FcstOnly_solar_altitude.conf

If you take a look at this and are unable to get your case working,
please
post your files to our ftp server, and I'll see what I can do to get
it
working for you.  The instruction to do that are listed under "How To
Send
Us Data" on this page:
https://dtcenter.org/community-code/model-evaluation-tools-met/met-
help-desk

Thanks!

Julie

On Wed, Jun 9, 2021 at 1:58 PM Rabenhorst, Scott D. (GSFC-
610.1)[SCIENCE
SYSTEMS AND APPLICATIONS INC] via RT <met_help at ucar.edu> wrote:

>
> Wed Jun 09 13:57:57 2021: Request 100177 was acted upon.
> Transaction: Ticket created by scott.d.rabenhorst at nasa.gov
>        Queue: met_help
>      Subject: Question on how to read netcdf files with gen_vx_mask
> metplus wrapper
>        Owner: Nobody
>   Requestors: scott.d.rabenhorst at nasa.gov
>       Status: new
>  Ticket <URL:
https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=100177 >
>
>
> Hi metplus help,
>
> Would you be able to point me to any examples of using gen_vx_mask
with a
> netcdf input file with grid information and some polyline file?
Also, is
> python embedding enabled for this tool? If so, any examples? I am
using MET
> 10.0.0 and METplus-4.0.
>
> I have been looking at this example
>
https://metplus.readthedocs.io/en/latest/generated/met_tool_wrapper/GenVxMask/GenVxMask.html#sphx-
glr-generated-met-tool-wrapper-genvxmask-genvxmask-py
> . However, when I try swapping in my netcdf file for
> “GEN_VX_MASK_INPUT_TEMPLATE = modeloutput.nc” then gen_vx_mask
fails. My
> netcdf file does contain “lat” and “lon” variables defining a
regular
> lat_lon grid, but I guess these fields are not read by gen_vx_mask
in the
> same way grib files can be read. Would you mind pointing me to any
examples
> on how this can be done.
>
> Thanks,
> Scott
>
>

--
Julie Prestopnik (she/her)
Software Engineer
National Center for Atmospheric Research
Research Applications Laboratory
Email: jpresto at ucar.edu

My working day may not be your working day.  Please do not feel
obliged to
reply to this email outside of your normal working hours.

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