[ncl-talk] WRF_pcp_1.ncl - contouring precip and terrain over map

[Dennis Shea]

Hello,

Actually, I'm not sure how the script you sent ever got to the point where
it was doing contouring. There were a number of errors.

I am attaching a script that gets you close. Please look carefully at it.
Also, please use 'printVarSummary' and 'printMinMax' frequently when
developing a script.

--
The attached script fails because the WRF software (written by WRF [
wrfhelp at ucar.edu]) is looking for XLAT_M and XLONG_M and they are not
present ... on either file.

---
atal:["Execute.c":132]:variable (XLAT_M) is not in file
(./wrf2d_d01_2010-01-10_04:00:00)
fatal:["Execute.c":6316]:variable (XLAT_M) is not in file (in_file)
fatal:["Execute.c":8575]:Execute: Error occurred at or near line 4530 in
file /Users/shea/devel/ncl/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl

fatal:["Execute.c":8575]:Execute: Error occurred at or near line 4619 in
file /Users/shea/devel/ncl/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl

fatal:["Execute.c":8575]:Execute: Error occurred at or near line 4702 in
file /Users/shea/devel/ncl/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl

fatal:["Execute.c":8575]:Execute: Error occurred at or near line 261 in
file WRF_precip.ncl_test

===
A person who knows WRF sent me the following:

"They pulled the XLAT, XLONG, etc coordinate variables out of their
wrf2d_d01_2010-01-10_04:00:00 file, so it's not really a WRF file anymore.
They'll need to glue back in the variables from wrfout_conus_constants.nc
before you can count on the stuff in WRFUserARW.ncl to work.  That also
assumes they didn't remove other things that the script is expecting.  I'm
not familiar with wrf-hydro, is that how it normally works to split the
data up?"

===
I did think the XLAT, XLONG on the conus file should be XLAT_M and XLONG_M
giventhe file has XLAT_{U,V} and XLONG_{U,V}. Actually, the XLAT_M, XLONG_M
should be on the wrf2d file (I think)

Good luck


On Wed, Oct 26, 2016 at 9:36 AM, Juris Almonte <Juris.Almonte at umanitoba.ca>
wrote:

> Hi NCL talk,
>
> I am using the script WRF_pcp_1.ncl which contours precipitation and
> terrain and overlays them using wrf_map_overlays.  I am running NCL V 6.3.
>
> Unfortunately I receive the following fatal errors:
> fatal:ContourPlotPreDraw: ARSCAM/ARPRAM - ALGORITHM FAILURE
> fatal:ContourPlotDraw: draw error
> fatal:PlotManagerPreDraw: error in plot pre-draw
> fatal:_NhlPlotManagerDraw: PreDraw error
>
> I’ve also tried using “RasterFill” instead of “AreaFill”, as recommended
> browsing through previous questions, however topography was not being
> contoured properly.
>
> I have attached my script.  The two files listed when using systemfunc
> include one file with the WRF 2d data and another with the WRF constants
> (XLAT, XLONG, etc).
>
> Any suggestions please?
>
> Thanks,
>
> Juris
> M.Sc. student
> University of Manitoba
>
>
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