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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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Hi Stephane, th polar_stereographic variable should have an attribute: polar_stereographic:grid_mapping_name = polar_stereographicthe projected data variables (alsi?) should have the attributes linking to above variable:
alsi:grid_mapping = polar_stereographic and to the actual coordinates lat and lon. alsi:coordinates = "lat lon" alsi should not have the grid_mapping_name attribute.I hope this is all. I don't understand the hemisphere_of_standard_parallel and resolution_at_standard_parallel parameters.
Best regards, Heiko PS: I don't see any UTM in the lat-lon example??? On 2010-08-16 18:04, Stephane Poirier wrote:
Hi All, I have netcdf files that are not seen as grided by either netcdf tools ui 4.2 or my thredds 4.2 server (http://odin.meteo.mcgill.ca:8080/thredds/catalog/testAll/catalog.html). The data file http://odin.meteo.mcgill.ca:8080/thredds/catalog/testAll/catalog.html?dataset=testDatasetScan/MRCC.4.2.0_amno_adj_alsi_ps_196012_r%28cf-1-4%29.nc is representative of many terabytes of netcdf files that we are to make available to public BUT do not fully comply to geogrid specifications CF-1.0/COARDS (I think our files are close to be complying but something is missing in our polar stereographic netcdf headers). For modifying netcdf variables, I am planning on using NcML (as shown http://www.unidata.ucar.edu/projects/THREDDS/tech/tds4.2/tutorial/NcML.htm) BUT I don't exactly know what parameters are missing in order to connect the polar_stereographic netcdf header information to our x and y axis. Here attached, I have included the 2 differents types of netcdf header we use, a netcdf dump of lat lon UTM data (which works fine with all enabled thredds services) and a netcdf dump for polar stereographic data (which is not perceived as gridded data just yet, see file 2010aug16_polar-stereo-netcdf_ccrm-sample.txt). Must grid_mapping_name = polar_stereographic be specified somewhere within our header? Do we properly link the polar_stereographic structure to the x and y axis (xc,yc structures)? Regards, Stephane -------------------------------------------------------------------- Stephane Poirier, M.Sc. Optical Physics Remote Sensing Application Software Developer Geography Department, Burnside Hall McGill University, Montreal, QC, Canada http://geog.mcgill.ca Stephane.Poirier2@xxxxxxxxx <mailto:Stephane.Poirier2@xxxxxxxxx> Cell. (514) 994-3532 Fax: (514) 509-8833 -------------------------------------------------------------------- Stephane Poirier, M.Sc. Optical Physics Remote Sensing Application Software Developer 3532 rue Sainte-Famille, Apt. 4 Montreal, QC, H2X 2L1, Canada http://www.oifii.org stephane.poirier@xxxxxxxxx <mailto:stephane.poirier@xxxxxxxxx> Tel.: (514) 509-8833 Fax: (514) 509-8833 -------------------------------------------------------------------- _______________________________________________ thredds mailing list thredds@xxxxxxxxxxxxxxxx For list information or to unsubscribe, visit: http://www.unidata.ucar.edu/mailing_lists/
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