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-rw-r--r--data/sql/customizations.sql11
1 files changed, 11 insertions, 0 deletions
diff --git a/data/sql/customizations.sql b/data/sql/customizations.sql
index 8003c921..86d49b09 100644
--- a/data/sql/customizations.sql
+++ b/data/sql/customizations.sql
@@ -26,6 +26,17 @@ UPDATE grid_transformation SET interpolation_crs_auth_name = 'EPSG',
interpolation_crs_code = '4289'
WHERE auth_name = 'EPSG' AND code = '7001';
+-- EPSG:1312 'NAD27 to NAD83 (3)' / NTv1_0.gsb has a accuracy of 1m whereas
+-- EPSG:1313 'NAD27 to NAD83 (4)' / NTv2_0.gsb has a accuracy of 1.5m
+-- so we will never select automatically NTv2_0.gsb. Worse the advertize
+-- accuracy of the NTv1 method
+
+UPDATE grid_transformation SET accuracy = 2.0 WHERE auth_name = 'EPSG' AND code = '1312';
+
+-- Same for EPSG:1462 vs EPSG:1573
+
+UPDATE grid_transformation SET accuracy = 2.0 WHERE auth_name = 'EPSG' AND code = '1462';
+
-- Define the allowed authorities, and their precedence, when researching a
-- coordinate operation