Hi @marqh, I wasn't suggesting that you can't have both dimension coordinate
and auxiliary coordinate variables explicitly associated with a grid mapping -
quite the opposite: given that you can I was at first concerned on how the
presence of N-d variables affected the mapping to CRS-WKT axes - a concern I
have already withdrawn.
You're right, though, that my example was a bit lacking; but I still think that
it is possible to have 2-d latitude, longitude and 1-d (projection) coordinates
explicitly linked to the same CRS.
Consider:
```
char rotated_pole
rotated_pole:grid_mapping_name = "rotated_latitude_longitude" ;
rotated_pole:grid_north_pole_latitude = 32.5 ;
rotated_pole:grid_north_pole_longitude = 170. ;
rotated_pole:earth_radius = 6200000. ;
```
Then it would make sense to explicitly link (they're already implicitly linked)
all four coordinates to "rotated_pole" grid mapping - the `lat` and `lon`
variables can make use of the spherical earth definition.
Thanks, David
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