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15 lines
1.2 KiB
Plaintext
15 lines
1.2 KiB
Plaintext
{
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"name": "buffer",
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"type": "function",
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"groups": ["GeometryGroup"],
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"description": "Returns a geometry that represents all points whose distance from this geometry is less than or equal to distance. Calculations are in the Spatial Reference System of this geometry.",
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"arguments": [ {"arg":"geometry","description":"a geometry"},
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{"arg":"distance","description":"buffer distance in layer units"},
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{"arg":"segments","optional":true,"default":"8","description":"number of segments to use to represent a quarter circle when a round join style is used. A larger number results in a smoother buffer with more nodes."},
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{"arg":"cap","optional":true,"default":"8","description":"end cap style for buffer. Valid values are 'round', 'flat' or 'square'"},
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{"arg":"join","optional":true,"default":"'round'","description":"join style for buffer. Valid values are 'round', 'bevel' or 'miter'."},
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{"arg":"miter_limit","optional":true,"default":"2","description":"miter distance limit, for use when the join style is set to 'miter'"}],
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"examples": [ { "expression":"buffer($geometry, 10.5)", "returns":"polygon of the current feature's geometry buffered by 10.5 units"}]
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}
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