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