PROJ/scripts/build_db_create_ignf_from_xml.py, branch 6.2.1 Forked from https://github.com/OSGeo/PROJ Database: make conversion & helmert_transformation updatable views 2019-04-22T13:49:31+00:00 Even Rouault even.rouault@spatialys.com 2019-04-21T19:51:43+00:00 e63f206d994658995505ce322d644fba0b807d5b - Transform conversion as a view, and when inserting into it, actually insert into 3 tables: conversion_table, conversion_method and conversion_param, so that method and parameter names are not repeated each time. - Similarly for helmert_tranformation, insert into helmert_transformation_tabl and coordinate_operation_method. This reduces the db size from 6 344 704 bytes to 5 853 184 bytes, without significant slowdown for queries. 
- Transform conversion as a view, and when inserting into it, actually
  insert into 3 tables: conversion_table, conversion_method and conversion_param,
  so that method and parameter names are not repeated each time.
- Similarly for helmert_tranformation, insert into helmert_transformation_tabl
  and coordinate_operation_method.

This reduces the db size from 6 344 704 bytes to 5 853 184 bytes, without
significant slowdown for queries.
Database: add operation_version column to coordinate operation tables 2019-03-25T16:00:04+00:00 Even Rouault even.rouault@spatialys.com 2019-03-25T16:00:04+00:00 054d02760db6fc2c33889d577cd671baa8807909 






Database: update to IGNF v3.0.3
2019-03-25T15:54:28+00:00

Even Rouault
even.rouault@spatialys.com

2019-03-25T15:54:28+00:00

c0312858f7621bde4568d98e6ea43fd45bd57a83












Database: use official IGNF.xml registry to create content from the IGNF authority
2018-11-20T11:28:20+00:00

Even Rouault
even.rouault@spatialys.com

2018-11-20T11:28:20+00:00

0d3d2cede31f8c18f5ae355db6a6b4e15a4620d2

Up to now, we re-processed the data/IGNF PROJ.4 definition to ingest it into proj.db,
but this file originally come from a processing of IGNF.xml
( http://librairies.ign.fr/geoportail/resources/IGNF.xml )

The end result is not strictly equivalent, as data/IGNF has some 'magic' to create
towgs84 / nadgrids, since IGNF.xml doesn't necessary contain all transformations
from its geodetic systems to WGS84. I've tried to re-add some of those missing transforms
(null Helmert transforms), so it can be used for pivoting, but that might be incomplete.





Up to now, we re-processed the data/IGNF PROJ.4 definition to ingest it into proj.db,
but this file originally come from a processing of IGNF.xml
( http://librairies.ign.fr/geoportail/resources/IGNF.xml )

The end result is not strictly equivalent, as data/IGNF has some 'magic' to create
towgs84 / nadgrids, since IGNF.xml doesn't necessary contain all transformations
from its geodetic systems to WGS84. I've tried to re-add some of those missing transforms
(null Helmert transforms), so it can be used for pivoting, but that might be incomplete.







Implement RFC 2: Initial integration of "GDAL SRS barn" work
2018-11-14T21:48:29+00:00

Even Rouault
even.rouault@spatialys.com

2018-11-14T16:40:42+00:00

d928db15d53805d9b728b440079756081961c536

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





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