CF geostationary projection
|Reported by:||lmajewsk||Owned by:||warmerdam|
Hi, The GDAL and netCDF-Java handling of the CF geostationary projection seem to differ.
For GDAL to match the CF proposal (accepted) the grid_mapping_name should be changed from "geostationary_satellite" to "geostationary".
An additional sweep_angle_axis field (default="y") should also be specified. (Apparently proj4.8.0 supports the "sweep" keyword https://trac.osgeo.org/proj/wiki/proj%3Dgeos#Noteonsweep, PJ_geos.c). However, WKT/osr/ogr do not support sweep at the moment (that I can see).
There seem to be some differences in the WKT and CF projection attribute names:
- "satellite_height" (WKT) should be specified using "perspective_point_height" attribute (CF, netCDF-java)
- "longitude_of_central_meridian" (WKT) should be "longitude_of_projection_origin" attribute (CF, netCDF-java)
I had a look at some of the source and can see where a few changes could be made, but I'm not across all the interconnected components of GDAL (ogr/srs/cf). I would be happy to help test.