Hi Peter: The problem is that you need to add xc and yc coordinate variables, which are used in the MSG projection. Im attaching a grib file with this projection. open in toolsui and look at those coordinates to see how its done. im still downloading the second file from ftp. John > Hi John, > > Sorry for the delay, we had two EUMETSAT holidays this week. > > You can find example files under the following FTP server: > > >> ftp://ftp.eumetsat.int/pub/EUM/out/USD/Unidata_test_files > > Can you let me know when you have downloaded them so that these files can be > deleted. > > Thanks and Regards, > > Pete. > > -----Original Message----- > From: Unidata netCDF Java Support [mailto:address@hidden > Sent: Saturday, October 29, 2011 12:50 AM > To: Peter Miu > Cc: Peter Miu; Michael Schick; Anastasia Andres; Jagmohan Khulbe > Subject: [netCDF #EVL-272024]: Standard Coordinate Transforms to Geo-locating > gridded data > > Hi Peter: > > Do you have a file with this in it? its usually faster for me to debug these > problems with a real file. > > Put it on ftp or http if its large. thanks > > John > > > Hi, > > > > We are investigating using the standard coordinate transforms to geo-locate > > the data > > in our SEVIRI MSG15 data sets. If we are able to do this, then we can > > reduce the size > > of the MSG15 NetCDF files by removing the lat and lon arrays. > > > > Please take a look at the CDL of the NetCDF definition we have implemented. > > The following is specified to provide the Unidata tools e.g. IDV, > > information > > On how to geo-locating the data. > > > > char Space_View_Perspective_or_Orthographic; > > :_CoordinateAxisTypes = "GeoX GeoY"; > > :longitude_of_projection_origin = 0.0; // double > > :latitude_of_projection_origin = 0.0; // double > > :height_from_earth_center = 4.2163970098E7; // double > > :semi_major_axis = 6378140.0; // double > > :grid_mapping_name = "MSGnavigation"; > > :_CoordinateTransformType = "Projection"; > > :earth_shape = "Earth oblate spheroid with axes specified by producer in m"; > > :scale_y = -35785.830098; // double > > :scale_x = 35785.830098; // double > > :semi_minor_axis = 6356755.5; // double > > > > This does not work so can you provide us with some information on how to > > specify these coordinate transforms correctly. > > We can upload an example NetCDF file with this defined to your server for > > you to used if it would help with the analysis. > > > > Regards, > > > > Peter Miu > > Data Services Operations Engineer > > EUMETSAT > > EUMETSAT Allee 1 > > 64295 Darmstadt > > Germany > > > > Tel: +49 6151 807 3290 > > URL: http://archive.eumetsat.int > > > > > > > > > Ticket Details > =================== > Ticket ID: EVL-272024 > Department: Support netCDF Java > Priority: Normal > Status: Open > > Ticket Details =================== Ticket ID: EVL-272024 Department: Support netCDF Java Priority: Normal Status: Open
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Eumetsat.VerticalPerspective.grb
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