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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
618 B
Plaintext
9 lines
618 B
Plaintext
{
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"name": "interior_ring_n",
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"type": "function",
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"description": "Returns a specific interior ring from a polygon geometry, or null if the geometry is not a polygon.",
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"arguments": [ {"arg":"geometry","description":"polygon geometry"},
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{"arg":"index","description":"index of interior to return, where 1 is the first interior ring"} ],
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"examples": [ { "expression":"geom_to_wkt(interior_ring_n(geom_from_wkt('POLYGON((-1 -1, 4 0, 4 2, 0 2, -1 -1),(-0.1 -0.1, 0.4 0, 0.4 0.2, 0 0.2, -0.1 -0.1),(-1 -1, 4 0, 4 2, 0 2, -1 -1))'),1))", "returns":"'LineString (-0.1 -0.1, 0.4 0, 0.4 0.2, 0 0.2, -0.1 -0.1))'"}]
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}
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