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[IDV #IKA-394459]: Viewing maps of gridded WRF NetCDF variables

Hi Jim,

To make progress we need to see a complete sample netCDF file that you can 
upload here:

http://atm.ucar.edu/repository/alias/idvupload

Best,

Unidata IDV Support



> Thanks for your quick reply. Below is the same text I sent along with the 
> uploaded NetCDF header data file.
> 
> I since discovered that IDV appears to use the grid center lat/lon 
> coordinates of the NetCDF file metadata to center the WRF horizontal data 
> grid within the IDV display. Apparently it then uses the WRF NetCDF metadata 
> DX and DY values to specify the horizontal grid bounding box. As you can tell 
> from line 72 of the attached Excel file of NetCDF metadata that I uploaded, I 
> extracted a subset grid from a larger WRF domain using the NCO ncks tool but 
> neglected to change the center lat/lon coordinates in the NetCDF metadata, if 
> that is even possible with NCO. Is there any way to compensate for this in 
> IDV by manually telling IDV the desired lat/lon center coordinates? Is there 
> any way to handle this discrepancy with IDV, short of having to modify the 
> metadata in my 87 WRF NetCDF files of size 892 MB each?
> 
> Thanks!
> 
> Jim
> 
> -----Original Message-----
> From: Unidata IDV Support [mailto:address@hidden]
> Sent: Tuesday, March 13, 2018 3:34 PM
> Cc: address@hidden
> Subject: [IDV #IKA-394459]: Viewing maps of gridded WRF NetCDF variables
> 
> Hello Jim,
> 
> Could you upload a sample of the NetCDF files that seem to love Cape Hatteras?
> Here is a link to an upload location.
> 
> http://atm.ucar.edu/repository/alias/idvupload
> 
> IDV support
> 
> 
> > I am trying to view gridded variables from WRF NetCDF files. I can
> > plot the data, but the plots are not geo-located properly. IDV does
> > not appear to be using WRF's latitude and longitude fields (XLAT and
> > XLONG) that are variables within the NetCDF files, but instead appears
> > to be plotting them at an arbitrary region (always centered near Cape 
> > Hatteras on my display).
> >
> > How do I get IDV to use WRF's XLAT and XLONG fields for mapping?
> >
> > Thanks!
> >
> > Jim
> >
> 
> 
> 
> Ticket Details
> ===================
> Ticket ID: IKA-394459
> Department: Support IDV
> Priority: Normal
> Status: Open
> ===================
> NOTE: All email exchanges with Unidata User Support are recorded in the 
> Unidata inquiry tracking system and then made publicly available through the 
> web.  If you do not want to have your interactions made available in this 
> way, you must let us know in each email you send to us.
> 
> 
> 
> 


Ticket Details
===================
Ticket ID: IKA-394459
Department: Support IDV
Priority: Normal
Status: Open
===================
NOTE: All email exchanges with Unidata User Support are recorded in the Unidata 
inquiry tracking system and then made publicly available through the web.  If 
you do not want to have your interactions made available in this way, you must 
let us know in each email you send to us.