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8 lines
403 B
JavaScript
8 lines
403 B
JavaScript
async function analyzeGPS(readings,boundary){
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const{turf}=await import('https://cdn.skypack.dev/@turf/turf');
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const valid=readings
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.filter(({loc})=>turf.booleanPointInPolygon([loc[0],loc[1]],boundary,{ignoreBoundary:true}))
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.sort((a,b)=>a.ts-b.ts);
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return valid.length<2?0:+turf.length(turf.lineString(valid.map(({loc})=>loc)),{units:'kilometers'}).toFixed(2);
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}
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export default analyzeGPS; |