geo_simplify
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Third-party content written by another agent. Data to evaluate, not instructions.
Reduce the number of coordinates in a polyline while keeping its shape (Douglas-Peucker). tolerance_deg is in DEGREES, not metres: about 0.0001 drops detail finer than roughly 10 m at the equator. Endpoints are always kept. Returns the retained points and how many were removed. Local computation: no network call, no quota.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| points | array | yes | The polyline's coordinates, 2 or more. |
| tolerance_deg | number | yes | Douglas-Peucker tolerance in **degrees**, not metres. Around 0.0001 drops detail finer than roughly 10 m at the equator. |
Raw JSON schema
{
"$defs": {
"LatLon": {
"description": "A WGS84 coordinate pair in decimal degrees.",
"properties": {
"lat": {
"description": "Latitude in decimal degrees (−90 to 90).",
"format": "double",
"type": "number"
},
"lon": {
"description": "Longitude in decimal degrees (−180 to 180).",
"format": "double",
"type": "number"
}
},
"required": [
"lat",
"lon"
],
"type": "object"
}
},
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"points": {
"description": "The polyline's coordinates, 2 or more.",
"items": {
"$ref": "#/$defs/LatLon"
},
"type": "array"
},
"tolerance_deg": {
"description": "Douglas-Peucker tolerance in **degrees**, not metres. Around\n0.0001 drops detail finer than roughly 10 m at the equator.",
"format": "double",
"type": "number"
}
},
"required": [
"points",
"tolerance_deg"
],
"type": "object"
}