Generate a standard GeoJSON Feature string from coordinate buffer and geometry type.

Arguments

• coords — Flat Float64Array [lng0, lat0, lng1, lat1, …]
• geometry_type — One of: "Point", "LineString", "Polygon", "MultiPoint"

Returns

A JSON string representing a GeoJSON Feature.

Example (JS)

const coords = new Float64Array([116.404, 39.915]);
const json = core.geoJsonFromCoords(coords, "Point");
// json = '{"type":"Feature","geometry":{"type":"Point","coordinates":[116.404,39.915]},"properties":{}}'
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