Frans,
Hi!
For OGC the OGC features API, it would be good to be able to configure
Mapserver in such a way that coordinate transformation is not done
when a client requests data in the same CRS that the source data use.
The Coordinate Reference Systems by Reference extension
<https://github.com/opengeospatial/ogcapi-features/tree/master/extensions/crs>provides
a way of doing that, and seems to remove the dependency on CRS84,
imposed by GeoJSON, at the same time.
My question is: is it possible to configure the storageCrs for
datasets that use the OGC Features API?
Yes, the storageCrs will be the first CRS mentioned in the list of
LAYER.METADATA.oga_srs
See
https://github.com/MapServer/MapServer/blob/bee04efb3b8c072a261936d5e93b1adf9ed83522/msautotest/api/ogcapi.map#L76
| And will that prevent unnecessary coordinate transformations?
Only, if you explicitly request this CRS with the "crs" query parameter
of the items request.
Like &crs=http://www.opengis.net/def/crs/EPSG/0/32615
Even
--
http://www.spatialys.com
My software is free, but my time generally not.
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