Turf lenght accuracy

Problems with turf length accuracy

by Stefano

HTML

<link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/leaflet.css">
<script src="https://unpkg.com/[email protected]/dist/leaflet.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@turf/turf@5/turf.min.js"></script>
<script src="https://5514.se/temp/da_line_wstations.js"></script>
<div id="map"></div>

CSS

html,
        body,
        #map {
          height: 100%;
          width: 100%;
        }

JavaScript

var turfline = turf.lineString([
  [17.917491, 59.414082],
  [17.913936, 59.415673],
  [17.913789, 59.415738],
  [17.913681, 59.415786],
  [17.913583, 59.41583],
  [17.913493, 59.415869],
  [17.913405, 59.415907],
  [17.913322, 59.415943],
  [17.913241, 59.415977],
  [17.913164, 59.41601],
  [17.913085, 59.416042],
  [17.913008, 59.416073],
  [17.912932, 59.416103],
  [17.912858, 59.416132],
  [17.912785, 59.41616],
  [17.912713, 59.416187],
  [17.912642, 59.416214],
  [17.912571, 59.416239],
  [17.912485, 59.416269],
  [17.912398, 59.416299],
  [17.912311, 59.416328],
  [17.912222, 59.416356],
  [17.912133, 59.416384],
  [17.912044, 59.416411],
  [17.911953, 59.416438],
  [17.911862, 59.416464],
  [17.91177, 59.416489],
  [17.911678, 59.416514],
  [17.911585, 59.416538],
  [17.911491, 59.416562],
  [17.911397, 59.416585],
  [17.911302, 59.416607],
  [17.911207, 59.416629],
  [17.911111, 59.41665],
  [17.911014, 59.41667],
  [17.910917, 59.41669],
  [17.910819, 59.416709],
  [17.910721, 59.416727],
  [17.910623, 59.416745],
  [17.910524, 59.416762],
  [17.910425, 59.416778],
  [17.910325, 59.416794],
  [17.910225, 59.416809],
  [17.910124, 59.416823],
  [17.910023, 59.416837],
  [17.909922, 59.41685],
  [17.90982, 59.416862],
  [17.909719, 59.416874],
  [17.909616, 59.416885],
  [17.909514, 59.416895],
  [17.909411, 59.416905],
  [17.909308, 59.416914],
  [17.909205, 59.416922],
  [17.909102, 59.416929],
  [17.908998, 59.416936],
  [17.908894, 59.416942],
  [17.90879, 59.416948],
  [17.908686, 59.416953],
  [17.908582, 59.416957],
  [17.908478, 59.41696],
  [17.908374, 59.416962],
  [17.908269, 59.416964],
  [17.908165, 59.416966],
  [17.908061, 59.416966],
  [17.907956, 59.416966],
  [17.907852, 59.416965],
  [17.907747, 59.416964],
  [17.907643, 59.416961],
  [17.907539, 59.416958],
  [17.907435, 59.416955],
  [17.907331, 59.41695],
  [17.907227, 59.416945],
  [17.907123, 59.416939],
  [17.907019, 59.416933],
  [17.906916, 59.416926],
  [17.906812, 59.416918],
...