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[Backport 6.2] proj_create_crs_to_crs(): fix when there are only transformations with ballpark steps #1643

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merged 1 commit into from Sep 26, 2019

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rouault commented Sep 26, 2019

Currently we would discard all operations, resulting in a PJ object with
zero candidates. Better use those operations if nothing better is available.

Was seen on transforming from ETRS89 / UTM zone 31N + EGM96 height to WGS 84 (G1762).
The horizontal transformation from ETRS89 to WGS 84 (G1762) is a ballpark one.

…h ballpark steps

Currently we would discard all operations, resulting in a PJ object with
zero candidates. Better use those operations if nothing better is available.

Was seen on transforming from ETRS89 / UTM zone 31N + EGM96 height to WGS 84 (G1762).
The horizontal transformation from ETRS89 to WGS 84 (G1762) is a ballpark one.
@rouault rouault added this to the 6.2.1 milestone Sep 26, 2019
@rouault rouault merged commit b0b21db into OSGeo:6.2 Sep 26, 2019
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