mirror of
https://github.com/multipleof4/lynchmark.git
synced 2026-01-14 08:37:56 +00:00
12 lines
426 B
JavaScript
12 lines
426 B
JavaScript
const analyzeGPS = async (readings, boundary) => {
|
|
const turf = await import('https://cdn.jsdelivr.net/npm/@turf/turf/+esm');
|
|
|
|
const pts = readings
|
|
.filter(({ loc }) => turf.booleanPointInPolygon(turf.point(loc), boundary))
|
|
.sort((a, b) => a.ts - b.ts)
|
|
.map(r => r.loc);
|
|
|
|
return pts.length < 2 ? 0 :
|
|
+turf.length(turf.lineString(pts), { units: 'kilometers' }).toFixed(2);
|
|
};
|
|
export default analyzeGPS; |