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| author | Even Rouault <even.rouault@spatialys.com> | 2020-09-17 18:34:06 +0200 |
|---|---|---|
| committer | Even Rouault <even.rouault@spatialys.com> | 2020-09-17 18:36:22 +0200 |
| commit | aeb024f2df5fb1c4d83959b6b9edcb62e8385226 (patch) | |
| tree | 9dd11cfc5886825fdc822aa9f92ff120e5f12029 /docs/source/development/reference/cpp | |
| parent | 1e11bf646d2cf9b731b02f2260c68fe2a5a21cf4 (diff) | |
| download | PROJ-aeb024f2df5fb1c4d83959b6b9edcb62e8385226.tar.gz PROJ-aeb024f2df5fb1c4d83959b6b9edcb62e8385226.zip | |
Adjust createBoundCRSToWGS84IfPossible() and operation filtering (for POSGAR 2007 to WGS84 issues) (fixes #2356)
- We make createBoundCRSToWGS84IfPossible() more restrictive. If there are more
than one Helmert transformation from the CRS to WGS 84 covering the area of
use of the CRS, we do not create a BoundCRS / +towgs84
- In createOperations() filtering, we are less aggressive in discarding operations
that have the same area of use but worse accuracy. We do it only if they involve
more transformation steps.
We now get:
```
$ projinfo EPSG:5340 -o PROJ
PROJ.4 string:
+proj=longlat +ellps=GRS80 +no_defs +type=crs
$ projinfo -s EPSG:5340 -t EPSG:4326 --spatial-test intersects --summary
Candidate operations found: 2
EPSG:9264, POSGAR 2007 to WGS 84 (2), 0.5 m, Argentina
EPSG:5351, POSGAR 2007 to WGS 84 (1), 1.0 m, Argentina
```
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