On 2022-04-11 14:38, Greg Troxel via QGIS-Developer wrote:
Thanks Greg,
I think we should never copy the characters, only numbers ( well, except
when using W/S/E/N :-) )..
I also understood from somebody that when using latlon coordinates the
minus sign is actually redundant, as you should use the WSEN?
Part of the underlying trouble is that in qgis/proj we blur:
datum
projection
into
CRS
except that some CRS are datum only, and some are datum+projection.
But isn't that the 'difference' in what QGIS (in the CRS dialog) calls
'Geographic Coordinate Systems' vs 'Projected Coordinate Systems'?
So: that would make (?): if crs.isGeographic() [0] we should/could use
WSEN, and if not then we should NOT use WSEN (and optionally x/y if that
is more clear)... except when copying coordinates, because that would
mess up parsers :-)
Regards,
Richard
[0]
https://qgis.org/pyqgis/master/core/QgsCoordinateReferenceSystem.html?#qgis.core.QgsCoordinateReferenceSystem.isGeographic
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