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5b244ae88c
- add accessors: geometry_n, interior_ring_n - add num_geometries, num_rings, num_interior_rings - add nodes_to_points for converting every node in a geometry to a multipoint geometry - add segments_to_lines for converting every segment in a geometry to a multiline geometry nodes_to_points and segments_to_lines are intended for use with geometry generator symbology, eg to allow use of m and z values for nodes/lines with data defined symbology.
9 lines
537 B
Plaintext
9 lines
537 B
Plaintext
{
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"name": "geometry_n",
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"type": "function",
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"description": "Returns a specific geometry from a geometry collection, or null if the input geometry is not a collection.",
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"arguments": [ {"arg":"geometry","description":"geometry collection"},
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{"arg":"index","description":"index of geometry to return, where 1 is the first geometry in the collection"} ],
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"examples": [ { "expression":"geom_to_wkt(geometry_n(geom_from_wkt('GEOMETRYCOLLECTION(POINT(0 1), POINT(0 0), POINT(1 0), POINT(1 1))'),3))", "returns":"'Point (1 0)'"}]
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}
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