[gdal-dev] Odd comment in ogr_spatialref.h for TransformBounds API

Greg Troxel gdt at lexort.com
Thu Nov 5 04:01:31 PST 2026


Javier Jimenez Shaw <j1 at jimenezshaw.com> writes:

> I don't know the distinction in PostGIS.

In PostGIS (and probably some SQL/geo standards) "geometry" is a
coordinate system where if you treat it as Cartesian and do
distance/angle calculations you get the right answer.  More or less,
mabe exsctly, "projected conformal"

PostGIS also supports "geography", lat/lon, where distance isn't
Cartesian-distance.

https://www.postgis.net/workshops/postgis-intro/geography.html

But I see this was an off base comment on my part.

> Here it is just making the difference between northing-easting and
> easting-northing CRSs.

That doesn't come across in the original text at all.  At least I failed
to understand that this was the point.


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