Hi Mark,
I assume by netCDF 2.2 you are referring to netCDF-java 2.2 (nj22),
which is not the same thing as netCDF-2.2 ;-) I also note that you are
obviously trying to create CDM datasets. As I understand things CDM is
compatible with CF, but it is not exactly the same... 'point' datasets
do not mean anything in CF. So you're probably better off asking this
question on the netCDF-java lists
(
http://www.unidata.ucar.edu/support/mailinglist/mjd/netcdf-java.html).
That said, I can't see anything glaringly wrong with what you have here
(of course it has no data but assume thats deliberate ;-). I'm not sure
about the 'ni=99' syntax and the scale and valid range values look
strange... '_CoordinateAxisType' is, I think, a CDM-ism, but should just
be ignored by CF tools.
Oh, you do need to prefix all your variable attributes with the variable
name (or is this just your shorthand?), ie:
short sst(ni=99);
sst:standard_name = "sea_surface_temperature aerosol-corrected";
sst:long_name = "Aerosol Corrected SST";
^^^
...
cheers
Simon
Mark Ohrenschall wrote:
> Hi folks,
>
> I'm writing a point netCDF 3 dataset which I've had no luck in getting
> either the IDV or netCDF (2.2) Tools to open (it does an NCDump but does
> nothing under the PointObs tab). It's essentially an XYZT dataset; I've
> included its CDL below. Can anyone tell me what I'm doing wrong, what
> I'm not doing that I need to do, and (or) send me an example point
> netCDF dataset that can be opened by the IDV and netCDF Tools?
>
> Thanks *--* Mark
>
> netcdf D:/test.nc {
> dimensions:
> ni = UNLIMITED; // (99 currently) // (has coord.var)
> variables:
> int ni(ni=99);
> short sst(ni=99);
> :standard_name = "sea_surface_temperature aerosol-corrected";
> :long_name = "Aerosol Corrected SST";
> :units = "degC";
> :scale_factor = 1s; // short
> :valid_range = -20s, 350s; // short
> :coordinates = "latitude longitude obstime";
> short latitude(ni=99);
> :standard_name = "latitude";
> :long_name = "Latitude";
> :units = "degrees_north";
> :scale_factor = 2s; // short
> :valid_range = -9000s, 9000s; // short
> :_CoordinateAxisType = "Lat";
> int obstime(ni=99);
> :standard_name = "time";
> :long_name = "Date and Time of Observation";
> :units = "seconds since 1970-01-01 00:00:00 GMT";
> :_CoordinateAxisType = "Time";
> short longitude(ni=99);
> :standard_name = "longitude";
> :long_name = "Longitude";
> :units = "degrees_east";
> :scale_factor = 2s; // short
> :valid_range = -18000s, 17999s; // short
> :_CoordinateAxisType = "Lon";
>
> :Conventions = "CF-1.0, Unidata Observation Dataset v1.0";
> :title = "Sea Surface Temperatures calculated at points based on satellite observations.";
> :institution = "NOAA National Environmental Satellite, Data and Information Service";
> :source = "NOAA NESDIS Office of Satellite Data Processing and Distribution";
> :history = "2006-11-24 17:14:31 -0700 Translated from test into netCDF at NGDC";
> :references = "http://www2.ncdc.noaa.gov/docs/klm/html/c9/sec91-2.htm";
> :comment = "Miscellaneous information about the data or methods used to produce it.";
> :cdm_datatype = "Point";
> :observationDimension = "ni";
> :geospatial_lat_max = 90; // int
> :geospatial_lat_min = -90; // int
> :geospatial_lon_max = 180; // int
> :geospatial_lon_min = -180; // int
> :time_coverage_start = "2000-01-01 00:00:00 UTC";
> :time_coverage_end = "2007-01-01 00:00:00 UTC";
> }
>
>
>
> ------------------------------------------------------------------------
>
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> CF-metadata at cgd.ucar.edu
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--
Simon Wood
National Institute of Water and Atmospheric Research, Wellington, NZ
simon.wood at niwa.co.nz
http://www.niwa.co.nz
Received on Mon Nov 27 2006 - 15:21:25 GMT
