diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/iso19111/coordinateoperation.cpp | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/src/iso19111/coordinateoperation.cpp b/src/iso19111/coordinateoperation.cpp index 0e61d2ee..65ef2b77 100644 --- a/src/iso19111/coordinateoperation.cpp +++ b/src/iso19111/coordinateoperation.cpp @@ -11380,8 +11380,31 @@ struct SortFunction { return false; } - // Arbitrary final criterion - return a_name < b_name; + // Arbitrary final criterion. We actually return the greater element + // first, so that "Amersfoort to WGS 84 (4)" is presented before + // "Amersfoort to WGS 84 (3)", which is probably a better guess. + + // Except for French NTF (Paris) to NTF, where the (1) conversion + // should be preferred because in the remarks of (2), it is mentionned + // OGP prefers value from IGN Paris (code 1467)... + if (a_name.find("NTF (Paris) to NTF (1)") != std::string::npos && + b_name.find("NTF (Paris) to NTF (2)") != std::string::npos) { + return true; + } + if (a_name.find("NTF (Paris) to NTF (2)") != std::string::npos && + b_name.find("NTF (Paris) to NTF (1)") != std::string::npos) { + return false; + } + if (a_name.find("NTF (Paris) to RGF93 (1)") != std::string::npos && + b_name.find("NTF (Paris) to RGF93 (2)") != std::string::npos) { + return true; + } + if (a_name.find("NTF (Paris) to RGF93 (2)") != std::string::npos && + b_name.find("NTF (Paris) to RGF93 (1)") != std::string::npos) { + return false; + } + + return a_name > b_name; } bool operator()(const CoordinateOperationNNPtr &a, |