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export function Distance() {
const _ = L.Control.Elevation.Utils;
let opts = this.options;
let distance = {};
opts.distanceFactor = opts.imperial ? this.__mileFactor : (opts.distanceFactor || 1); // 1 km = (1000 m)
distance.label = opts.imperial ? "mi" : opts.xLabel;
return {
name: 'distance',
required: true,
attr: 'dist',
unit: distance.label,
decimals: 5,
pointToAttr: (_, i) => (i > 0 ? this._data[i - 1].dist : 0) + (this._data[i].latlng.distanceTo(this._data[i > 0 ? i - 1 : i].latlng) * opts.distanceFactor) / 1000, // convert back km to meters
// stats: { total: _.iSum },
onPointAdded: (distance, i) => this.track_info.distance = distance,
scale: opts.distance && {
axis : "x",
position: "bottom",
scale : "x", // this._chart._x,
labelY : 25,
labelX : () => this._width() + 6,
ticks : () => _.clamp(this._chart._xTicks() / 2, [4, +Infinity]),
},
grid: opts.distance && {
axis : "x",
position : "bottom",
scale : "x" // this._chart._x,
},
tooltip: opts.distance && {
name: 'x',
chart: (item) => L._("x: ") + _.round(item[opts.xAttr], opts.decimalsX) + " " + distance.label,
order: 20
},
summary: opts.distance && {
"totlen" : {
label: "Total Length: ",
value: (track) => (track.distance || 0).toFixed(2) + ' ' + distance.label,
order: 10
}
}
};
}
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