[SIS-533] Add "Rotated Latitude/Longitude" coordinate operation

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.2
• Component/s: Referencing
• Assignee: Martin Desruisseaux
• Reporter: Martin Desruisseaux
• Created: 28/Jan/22 19:35
• Updated: 07/Dec/22 18:34
• Resolved: 31/Jan/22 11:02

Description

Add the "Rotated Latitude/Longitude" coordinate operation as described by the World Meteorological Organization (WMO) in GRIB2 template 3.1. This coordinate operation has no EPSG code (at the time of writing this issue).

In the UCAR netCDF library,  this is named "rotated_latlon_grib" with the following parameters:

• "grid_south_pole_latitude"
• "grid_south_pole_longitude"
• "grid_south_pole_angle"

Note that UCAR also defines a north pole variant named "rotated_latitude_longitude" with the following parameters:

• "grid_north_pole_latitude"
• "grid_north_pole_longitude"
• "north_pole_grid_longitude"

I didn't found WMO names for parameters. In absence if alternatives, Apache SIS currently uses the netCDF parameter names. Those names seem to be used by the PROJ library as well.