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[netCDFJava #KWA-143788]: query related to point datasets and GEOS Projection


If I understand your first query correctly, you have data from three sources 
that perhaps nearly, but don't quite, line up in space and time.  It is 
certainly possible to assign dimenions lat1, lon1, lat2, lon2, lat3, lon3 in 
netCDF to describe the datasets.  Alternatively, if you are using netcdf4, you 
can use the same names (lat and lon) for dimensions in three different groups.  
I'm not sure what you mean when you say that netcdf-java only picks up one of 
the datasets.

The best answer on how to package your data is to suggest looking at it from 
the perspective of the end user or application, as ultimately, this is what 
matters most.  For instance, you could fudge the three dataset grids into an 
average and report only one lat/lon grid, or you could trust the end user to 
interpret the three grids appropriately.

As to your second query, can you clarify what you need or are trying to do?

  Lansing Madry
  Boulder, Colorado

> Sir,
> First query is related to point data...
> I have winds from three channels (VIS/IR/WV) which have three different
> sets of lat/lon.  I am trying to follow CF conventions. Is it possible
> to pack all the three sets of winds in one hdf/netcdf file and then read
> them using netcdf-java enhanced data model...  What I am seeing is that
> it picks only one of the datasets?  Or is it possible using CDM....
> Second query is related to GEOS Projection.
> Is there any class in ucar.unidata.geoloc.projection and corresponding
> class in ucar.nc2.dataset.transform. I think it is already in there in
> the CF conventions.
> I can try writing if it is not available.
> regards
> Ghansham

Ticket Details
Ticket ID: KWA-143788
Department: Support netCDF Java
Priority: Critical
Status: Open