Forces polygons to follow the right hand rule, in which the area that
is bounded by a polygon is to the right of the boundary. In particular,
the exterior ring is oriented in a clockwise direction and the
interior rings in a counter-clockwise direction.
This is the change in plain SQL:
INSERT INTO tbl_datum_transform VALUES (7709, 100018, 4277, 4258, 9615, 'OSTN15_NTv2_OSGBtoETRS.gsb',
null, null, null, null, null, null, 'UK National Transformation provided by Ordnance Survey',
'For applications requiring an accuracy of better than 10 centimetres.', 1, 0, 1264);
INSERT INTO tbl_datum_transform VALUES (7710, 100019, 4277, 4326, 9615, 'OSTN15_NTv2_OSGBtoETRS.gsb',
null, null, null, null, null, null, 'UK National Transformation provided by Ordnance Survey',
'For applications requiring an accuracy of better than 10 centimetres.', 1, 0, 1264);
(one still needs to manually download the .gsb grid file to use it but at least no need to modify system srs.db)
https://www.ordnancesurvey.co.uk/business-and-government/help-and-support/navigation-technology/os-net/formats-for-developers.html
Three new easter eggs:
world : Add a world map to your canvas - it is the same world map as used by the CRS chooser
contributors : Adds the contributors json (used to be in docs, now moved to resources/data)to the map canvas so you can quickly see the locations of QGIS developers in QGIS
hackfests : Adds qgis_hackfests.json (in resources/data) to the canvas so you can quickly see the locations of all historical QGIS hackfests. Note the attribute table has other interesting data too.
Returns the portion of a line (or curve) geometry which falls
between the specified start and end distances (measured from the
beginning of the line). Z and M values are linearly interpolated
from existing values.
Fixes#15611
