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| author | Even Rouault <even.rouault@spatialys.com> | 2019-04-18 11:06:34 +0200 |
|---|---|---|
| committer | Even Rouault <even.rouault@spatialys.com> | 2019-04-18 11:06:34 +0200 |
| commit | adc03895800b192f72dc70213786ee708909b75e (patch) | |
| tree | 293c6d51c5b2740594dbdd45d801356cbb4085b3 /src/iso19111/c_api.cpp | |
| parent | fc395adffc379ec2281288ee4d87a09eca9653bc (diff) | |
| download | PROJ-adc03895800b192f72dc70213786ee708909b75e.tar.gz PROJ-adc03895800b192f72dc70213786ee708909b75e.zip | |
Improve doc of proj_coordoperation_get_towgs84_values() (fixes #1430)
Diffstat (limited to 'src/iso19111/c_api.cpp')
| -rw-r--r-- | src/iso19111/c_api.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/iso19111/c_api.cpp b/src/iso19111/c_api.cpp index 970d38d8..8fea51e9 100644 --- a/src/iso19111/c_api.cpp +++ b/src/iso19111/c_api.cpp @@ -5962,7 +5962,10 @@ int proj_coordoperation_get_param( * @param coordoperation Object of type Transformation, that can be represented * as a WKT1 TOWGS84 node (must not be NULL) * @param out_values Pointer to an array of value_count double values. - * @param value_count Size of out_values array. + * @param value_count Size of out_values array. The suggested size is 7 to get + * translation, rotation and scale difference parameters. Rotation and scale + * difference terms might be zero if the transformation only includes translation + * parameters. In that case, value_count could be set to 3. * @param emit_error_if_incompatible Boolean to inicate if an error must be * logged if coordoperation is not compatible with a WKT1 TOWGS84 * representation. |