From c9d4b0efb994ee522a036628d6becc6f6a519261 Mon Sep 17 00:00:00 2001 From: Martin Dobias Date: Tue, 18 Feb 2020 22:19:15 +0100 Subject: Add alternative grid for JTSK - JTSK03 transform (EPSG:8364) The definition of EPSG:8364 uses NADCON method for horizontal grid (.las/.los files) but this format is not supported by PROJ. UGKK (Slovak Geodetic and Cartographic Institute) provides NADCON .las/.los files here: https://www.geoportal.sk/files/gz/slovakia_jtsk03_to_jtsk.zip Additionally UGKK also provides the same grid file in NTv2 format: https://www.geoportal.sk/files/gz/slovakia_jtsk03_to_jtsk_ntv2.zip So let's add the NTv2 file the grid_alternatives table so that PROJ can automatically pick it up... --- data/sql/grid_alternatives.sql | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'data/sql/grid_alternatives.sql') diff --git a/data/sql/grid_alternatives.sql b/data/sql/grid_alternatives.sql index d8fd0c77..1c3f3f2e 100644 --- a/data/sql/grid_alternatives.sql +++ b/data/sql/grid_alternatives.sql @@ -2110,3 +2110,19 @@ INSERT INTO grid_alternatives(original_grid_name, 0, 'proj-datumgrid-oceania', NULL, NULL, NULL, NULL); + +-- Slovakia +INSERT INTO grid_alternatives(original_grid_name, + proj_grid_name, + proj_grid_format, + proj_method, + inverse_direction, + package_name, + url, direct_download, open_license, directory) + VALUES ('Slovakia_JTSK03_to_JTSK.LAS', + 'Slovakia_JTSK03_to_JTSK.gsb', + 'NTv2', + 'hgridshift', + 0, + NULL, + NULL, NULL, NULL, NULL); -- cgit v1.2.3