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19 lines
721 B
Plaintext
19 lines
721 B
Plaintext
{
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"name": "geometry_n",
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"type": "function",
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"groups": ["GeometryGroup"],
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"description": "Returns a specific geometry from a geometry collection, or NULL if the input geometry is not a collection. Also returns a part from a multipart geometry.",
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"arguments": [{
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"arg": "geometry",
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"description": "geometry collection"
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}, {
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"arg": "index",
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"description": "index of geometry to return, where 1 is the first geometry in the collection"
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}],
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"examples": [{
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"expression": "geom_to_wkt(geometry_n(geom_from_wkt('GEOMETRYCOLLECTION(POINT(0 1), POINT(0 0), POINT(1 0), POINT(1 1))'),3))",
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"returns": "'Point (1 0)'"
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}],
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"tags": ["part", "input", "multipart", "collection", "specific"]
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}
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