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2019-10-27Database: add an auxiliary concatenated_operation_step table to allow ↵Even Rouault
arbitrary number of steps (fixes #1632) EPSG:9103 (NAD27 to ITRF2014 (1)) is now handled. Note:EPSG:9104 (NAD27 to ITRF2014 (2)) is not currently, since it uses for step EPSG:8861 (NAD83(HARN) to NAD83(FBN) (1)) an unsupported transformation method (NADCON5 (3D), EPSG:1075).
2019-06-30Database: import scope/remarks for coordinate operation and add C APIEven Rouault
- Import scope and remarks for coordinate operations of the EPSG dataset. Database size goes from 5.2 MB to 5.55 MB - Add proj_get_scope() and proj_get_remarks()
2019-03-25Database: add operation_version column to coordinate operation tablesEven Rouault
2018-11-14Implement RFC 2: Initial integration of "GDAL SRS barn" workEven Rouault
This work mostly consists of: - a C++ implementation of the ISO-19111:2018 / OGC Topic 2 "Referencing by coordinates" classes to represent Datums, Coordinate systems, CRSs (Coordinate Reference Systems) and Coordinate Operations. - methods to convert between this C++ modeling and WKT1, WKT2 and PROJ string representations of those objects - management and query of a SQLite3 database of CRS and Coordinate Operation definition - a C API binding part of those capabilities This is all-in-one squashed commit of the work of https://github.com/OSGeo/proj.4/pull/1040