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Roland,As Don say my ncml is pretty complex because is doing many things at the same time (fixing variables units; renaming variables and dimension; union and joinExisting aggregations)
Attached, you can find a commented version of the ncml.
Antonio
(I'm Mr Cofiño and also Dr. Cofiño, but I prefer Antonio ;) )
--
Antonio S. Cofiño
Grupo de Meteorología de Santander
Dep. de Matemática Aplicada y
Ciencias de la Computación
Universidad de Cantabria
http://www.meteo.unican.es
El miércoles, 06 de noviembre de 2013 17:31:29, Roland Schweitzer -
NOAA Affiliate escribió:
Thanks, Don. I didn't look closely enough at the URL to see it was a fileServer URL and not an OPeNDAP URL. Roland On Wed, Nov 6, 2013 at 10:28 AM, Don Murray <don.murray@xxxxxxxx <mailto:don.murray@xxxxxxxx>> wrote: Hi Roland- Another way you can define the ensemble dimension (in addition to/instead of) is to use the CDM's _CoordinateAxisType attribute _CoordinateAxisType: "Ensemble"; Less CF'y, but guaranteed to work. ;-) I thought I had an NcML example, but I don't. Antonio's is pretty complex: http://www.meteo.unican.es/__thredds/fileServer/WRFUC/__2013110412/oper_gfs_mgrama___2013110412_d02.ncml <http://www.meteo.unican.es/thredds/fileServer/WRFUC/2013110412/oper_gfs_mgrama_2013110412_d02.ncml> Your's will depend on the structure of your files. The simplest is to have 1 variable/1 ensemble per file. Don On 11/6/13 8:48 AM, Roland Schweitzer - NOAA Affiliate wrote: Cofiño and Don, Thanks much for the input and the examples. This is extremely helpful. It will take me a while to experiment with the examples and understand the implications for what we are trying to accomplish. In particular, I'm going to use the examples to try to build my own ensembles from separate files using NCML. Cofiño, if you can share a bit of your NCML that would be a great. Thanks. I'll try to remember to report back anything I learn with my experiments that might be useful. Roland On Wed, Nov 6, 2013 at 9:24 AM, Don Murray (NOAA Affiliate) <don.murray@xxxxxxxx <mailto:don.murray@xxxxxxxx> <mailto:don.murray@xxxxxxxx <mailto:don.murray@xxxxxxxx>>> wrote: All- This provides an example of the different ways that an ensemble dimension can be used and that the CDM can handle. For Antonio's example, the dimension ordering is: float tas(ensemble=5, time1=121, height=1, lat=126, lon=201); :_CoordinateAxes = "ensemble time1 height lat lon "; :standard_name = "air_temperature"; :long_name = "Surface air temperature"; :units = "Celsius"; with ensemble as the leftmost dimension In the ensemble files I generate, they are: float Total_precipitation(time=1, ens=11, lat=27, lon=51); :_FillValue = 9999.0f; // float :units = "kg m-2"; :long_name = "Total_precipitation_____Accumulation (Accumulation for Mixed Intervals) @ surface"; I put time in the leftmost dimension. The nice thing is that the CDM does not care! You can structure it according to your needs. Don On 11/5/13 12:59 PM, Cofiño Gonzalez, Antonio Santiago wrote: Roland, This is an example with Ensemble coordinate axis http://www.meteo.unican.es/____thredds/catalog/WRFUC/____2013110412/catalog.html?____dataset=OPERWRF12DatasetScan/____2013110412/oper_gfs_mgrama_____2013110412_d02.ncml <http://www.meteo.unican.es/__thredds/catalog/WRFUC/__2013110412/catalog.html?__dataset=OPERWRF12DatasetScan/__2013110412/oper_gfs_mgrama___2013110412_d02.ncml> <http://www.meteo.unican.es/__thredds/catalog/WRFUC/__2013110412/catalog.html?__dataset=OPERWRF12DatasetScan/__2013110412/oper_gfs_mgrama___2013110412_d02.ncml <http://www.meteo.unican.es/thredds/catalog/WRFUC/2013110412/catalog.html?dataset=OPERWRF12DatasetScan/2013110412/oper_gfs_mgrama_2013110412_d02.ncml>> Antonio S. Cofiño Santander Meteorology Group University of Cantabria El 05/11/2013, a las 16:45, "Roland Schweitzer - NOAA Affiliate" <roland.schweitzer@xxxxxxxx <mailto:roland.schweitzer@xxxxxxxx> <mailto:roland.schweitzer@__noaa.gov <mailto:roland.schweitzer@xxxxxxxx>> <mailto:roland.schweitzer@ <mailto:roland.schweitzer@>__no__aa.gov <http://noaa.gov> <mailto:roland.schweitzer@__noaa.gov <mailto:roland.schweitzer@xxxxxxxx>>>> escribió: Hi, I see hints in the Java netCDF API that it can understand a grid that has an ensemble axis. What's not clear to me is how one constructs a netCDF data source (either in the file or via some sort of TDS aggregation) that represents the ensemble. The CF conventions document doesn't seem say anything about ensembles. Google is failing me, can anybody offer some examples or documentation links for data sources with an ensemble axis? Thanks, Roland ___________________________________________________ netcdf-java mailing list netcdf-java@xxxxxxxxxxxxxxxx <mailto:netcdf-java@xxxxxxxxxxxxxxxx> <mailto:netcdf-java@unidata.__ucar.edu <mailto:netcdf-java@xxxxxxxxxxxxxxxx>> <mailto:netcdf-java@unidata. <mailto:netcdf-java@unidata.>____ucar.edu <http://ucar.edu> <mailto:netcdf-java@unidata.__ucar.edu <mailto:netcdf-java@xxxxxxxxxxxxxxxx>>> For list information or to unsubscribe, visit: http://www.unidata.ucar.edu/____mailing_lists/ <http://www.unidata.ucar.edu/__mailing_lists/> <http://www.unidata.ucar.edu/__mailing_lists/ <http://www.unidata.ucar.edu/mailing_lists/>> ___________________________________________________ netcdf-java mailing list netcdf-java@xxxxxxxxxxxxxxxx <mailto:netcdf-java@xxxxxxxxxxxxxxxx> <mailto:netcdf-java@unidata.__ucar.edu <mailto:netcdf-java@xxxxxxxxxxxxxxxx>> For list information or to unsubscribe, visit: http://www.unidata.ucar.edu/____mailing_lists/ <http://www.unidata.ucar.edu/__mailing_lists/> <http://www.unidata.ucar.edu/__mailing_lists/ <http://www.unidata.ucar.edu/mailing_lists/>> -- Don Murray NOAA/ESRL/PSD and CU-CIRES 303-497-3596 <tel:303-497-3596> <tel:303-497-3596 <tel:303-497-3596>> http://www.esrl.noaa.gov/psd/____people/don.murray/ <http://www.esrl.noaa.gov/psd/__people/don.murray/> <http://www.esrl.noaa.gov/psd/__people/don.murray/ <http://www.esrl.noaa.gov/psd/people/don.murray/>> ___________________________________________________ netcdf-java mailing list netcdf-java@xxxxxxxxxxxxxxxx <mailto:netcdf-java@xxxxxxxxxxxxxxxx> <mailto:netcdf-java@unidata.__ucar.edu <mailto:netcdf-java@xxxxxxxxxxxxxxxx>> For list information or to unsubscribe, visit: http://www.unidata.ucar.edu/____mailing_lists/ <http://www.unidata.ucar.edu/__mailing_lists/> <http://www.unidata.ucar.edu/__mailing_lists/ <http://www.unidata.ucar.edu/mailing_lists/>> _________________________________________________ netcdf-java mailing list netcdf-java@xxxxxxxxxxxxxxxx <mailto:netcdf-java@xxxxxxxxxxxxxxxx> For list information or to unsubscribe, visit: http://www.unidata.ucar.edu/__mailing_lists/ <http://www.unidata.ucar.edu/mailing_lists/> -- Don Murray NOAA/ESRL/PSD and CIRES 303-497-3596 <tel:303-497-3596> http://www.esrl.noaa.gov/psd/__people/don.murray/ <http://www.esrl.noaa.gov/psd/people/don.murray/> _______________________________________________ netcdf-java mailing list netcdf-java@xxxxxxxxxxxxxxxx For list information or to unsubscribe, visit: http://www.unidata.ucar.edu/mailing_lists/
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