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| author | Even Rouault <even.rouault@spatialys.com> | 2019-09-23 13:26:02 +0200 |
|---|---|---|
| committer | Even Rouault <even.rouault@spatialys.com> | 2019-09-23 13:26:02 +0200 |
| commit | da802e250b2487d41013829437740628b2ede667 (patch) | |
| tree | 4b3bcb89b8b94d9718f4cbf73db70f548ce798c0 /docs | |
| parent | 91d3d51a5abafb773fca3e4aae3223cdedfc51af (diff) | |
| download | PROJ-da802e250b2487d41013829437740628b2ede667.tar.gz PROJ-da802e250b2487d41013829437740628b2ede667.zip | |
Document the autopromotion to 3D when mix of 2D/3D CRS in createOperations(), and test it (fixes #1623)
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/source/apps/projinfo.rst | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/docs/source/apps/projinfo.rst b/docs/source/apps/projinfo.rst index 8fbf0546..f6bf9ab0 100644 --- a/docs/source/apps/projinfo.rst +++ b/docs/source/apps/projinfo.rst @@ -224,9 +224,12 @@ The following control parameters can appear in any order: .. versionadded:: 7.0 - "Promote" the CRS(s) to their 3D version. Useful for example when wanting - to transform between a 2D projected CRS with elevations as ellipsoidal - height to a 3D geographic CRS or a compoundCRS. + "Promote" the CRS(s) to their 3D version. In the context of researching + available coordinate transformations, explicitly specifying this option is + not necessary, because when one of the source or target CRS has a vertical + component but not the other one, the one that has no vertical component is + automatically promoted to a 3D version, where its vertical axis is the + ellipsoidal height in metres, using the ellipsoid of the base geodetic CRS. .. option:: --c-ify |