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27 lines
917 B
Plaintext
27 lines
917 B
Plaintext
{
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"name": "collect",
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"type": "function",
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"groups": ["Aggregates"],
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"description": "Returns the multipart geometry of aggregated geometries from an expression",
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"arguments": [{
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"arg": "expression",
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"description": "geometry expression to aggregate"
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}, {
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"arg": "group_by",
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"optional": true,
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"description": "optional expression to use to group aggregate calculations"
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}, {
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"arg": "filter",
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"optional": true,
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"description": "optional expression to use to filter features used to calculate aggregate"
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}],
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"examples": [{
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"expression": "collect( $geometry )",
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"returns": "multipart geometry of aggregated geometries"
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}, {
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"expression": "collect( centroid($geometry), group_by:=\"region\", filter:= \"use\" = 'civilian' )",
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"returns": "aggregated centroids of the civilian features based on their region value"
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}],
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"tags": ["aggregated", "multipart"]
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}
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