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

Ghansham,

Can you send me a sample file that has your point data?  I'd like to see what 
you mean by netcdf java not picking up the data variables.

Thank you,
  Lansing

> Regarding point data, pretty straight forward example would be
> H.1 Point Data in CF 1.6 doc. But only change would be i will have three
> different data variables (in my case u and v components of winds from 3
> different channels) along with corresponding set of lat/lon/time variables.
> In current netcdf java we are not able to pick all the three set of data
> variables. It picks only one. This is prett much specific to point
> datasets. However in case of grids if I have 3 grids with three different
> sets of lat/lon(time if present not necessary) works very well.
> For second query just search GEOS satellite projection. we have support for
> this in cf as far as I remember. Which particular projection classes do
> this.
> Ghansham
> 
> address@hidden> wrote:
> > Ghansham,
> >
> > 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?
> >
> > Regards,
> >   Lansing Madry
> >   Unidata
> >   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
> >
> >
> 
> 


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