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55027e545f
- New expression functions for area(geom), perimeter(geom), point_n(geom), start_point(geom), end_point(geom), make_point(x,y) - Add new variant to length() function which takes a geometry object, allows for length(geom) evaluation. - Rename x_at, y_at to $x_at, $y_at (alias old names) to reflect that these only work on current feature geometry - Add x(geom), y(geom) functions which return x and y coordinate for point geometries or centroid x/y for non-point geometries (fix #11008)
8 lines
385 B
Plaintext
8 lines
385 B
Plaintext
{
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"function": "point_n",
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"description": "Returns a specific node from a geometry.",
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"arguments": [ {"arg":"geometry","description":"geometry object"},
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{"arg":"index","description":"index of node to return, where 1 is the first node"} ],
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"examples": [ { "expression":"geom_to_wkt(point_n(geom_from_wkt('POLYGON((0 0, 4 0, 4 2, 0 2, 0 0))'),2))", "returns":"'Point (4 0)'"}]
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}
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