How to use polyline - 10 common examples
To help you get started, we’ve selected a few polyline examples, based on popular ways it is used in public projects.
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Project-OSRM / osrm-backend / features / step_definitions / trip.js View on Github 
got.code = json.code;
}
if (headers.has('status')) {
got.status = json.code;
}
if (headers.has('message')) {
got.message = json.message;
}
if (headers.has('geometry')) {
if (this.queryParams['geometries'] === 'polyline') {
got.geometry = polyline.decode(json.trips[0].geometry).toString();
} else if (this.queryParams['geometries'] === 'polyline6') {
got.geometry = polyline.decode(json.trips[0].geometry, 6).toString();
} else {
got.geometry = json.trips[0].geometry.coordinates;
}
}
if (headers.has('#')) {
// comment column
got['#'] = row['#'];
}
var subTrips;
var trip_durations;
var trip_distance;
if (res.statusCode === 200) {
if (headers.has('trips')) {
subTrips = json.trips.filter(t => !!t).map(t => t.legs).map(tl => Array.prototype.concat.apply([], tl.map((sl, i) => {// and return in that header
headers.forEach((k) => {
let whitelist = ['duration', 'distance', 'datasources', 'nodes', 'weight'];
if (k.match(/^a:/)) {
let a_type = k.slice(2);
if (whitelist.indexOf(a_type) == -1)
return cb(new Error('Unrecognized annotation field:' + a_type));
if (!annotation[a_type])
return cb(new Error('Annotation not found in response: ' + a_type));
got[k] = annotation[a_type];
}
});
if (headers.has('geometry')) {
if (this.queryParams['geometries'] === 'polyline') {
got.geometry = polyline.decode(geometry).toString();
} else if (this.queryParams['geometries'] === 'polyline6') {
got.geometry = polyline.decode(geometry,6).toString();
} else {
got.geometry = geometry.coordinates;
}
}
if (headers.has('OSM IDs')) {
got['OSM IDs'] = OSMIDs;
}
if (headers.has('alternatives')) {
got['alternatives'] = alternatives;
}
var ok = true;
var encodedResult = '',if (res.body.length) {
json = JSON.parse(res.body);
got.code = json.code;
}
if (headers.has('status')) {
got.status = json.code;
}
if (headers.has('message')) {
got.message = json.message;
}
if (headers.has('geometry')) {
if (this.queryParams['geometries'] === 'polyline') {
got.geometry = polyline.decode(json.trips[0].geometry).toString();
} else if (this.queryParams['geometries'] === 'polyline6') {
got.geometry = polyline.decode(json.trips[0].geometry, 6).toString();
} else {
got.geometry = json.trips[0].geometry.coordinates;
}
}
if (headers.has('#')) {
// comment column
got['#'] = row['#'];
}
var subTrips;
var trip_durations;
var trip_distance;
if (res.statusCode === 200) {function polylineParse(txt, options, layer) {
layer = layer || L.geoJson();
options = options || {};
var coords = polyline.decode(txt, options.precision);
var geojson = { type: 'LineString', coordinates: [] };
for (var i = 0; i < coords.length; i++) {
// polyline returns coords in lat, lng order, so flip for geojson
geojson.coordinates[i] = [coords[i][1], coords[i][0]];
}
addData(layer, geojson);
return layer;
}function polylineParse(txt, options, layer) {
layer = layer || L.geoJson();
options = options || {};
var coords = polyline.decode(txt, options.precision);
var geojson = { type: 'LineString', coordinates: [] };
for (var i = 0; i < coords.length; i++) {
// polyline returns coords in lat, lng order, so flip for geojson
geojson.coordinates[i] = [coords[i][1], coords[i][0]];
}
addData(layer, geojson);
return layer;
}function polylineParse(txt, options, layer) {
layer = layer || L.geoJson();
options = options || {};
var coords = polyline.decode(txt, options.precision);
var geojson = { type: 'LineString', coordinates: [] };
for (var i = 0; i < coords.length; i++) {
// polyline returns coords in lat, lng order, so flip for geojson
geojson.coordinates[i] = [coords[i][1], coords[i][0]];
}
addData(layer, geojson);
return layer;
}function polylineParse(txt, options, layer) {
layer = layer || L.geoJson();
options = options || {};
var coords = polyline.decode(txt, options.precision);
var geojson = { type: 'LineString', coordinates: [] };
for (var i = 0; i < coords.length; i++) {
// polyline returns coords in lat, lng order, so flip for geojson
geojson.coordinates[i] = [coords[i][1], coords[i][0]];
}
addData(layer, geojson);
return layer;
}const legArray = json.trip.legs.map((leg, index) => {
return decodePolyline(leg.shape)
.map((c, index) => [c[1] / 10, c[0] / 10]) // Mapzen or Mapbox is encoding/decoding wrong?
})
return [].concat.apply([], legArray)componentWillReceiveProps(props) {
const { map, data } = props;
const geojson = {
type: 'FeatureCollection',
features: [data.origin, data.destination].filter((d) => {
return d.geometry;
})
};
if (data.directions.length) {
geojson.features.push({
geometry: {
type: 'LineString',
coordinates: decode(data.directions[0].geometry, 6).map((c) => {
return c.reverse();
})
}
});
}
// TODO fitBounds to geojson?
if (geojson.features.length) {
map.getSource('directions').setData(geojson);
if (!data.origin.geometry) {
map.flyTo({ center: data.destination.geometry.coordinates });
} else if (!data.destination.geometry) {
map.flyTo({ center: data.origin.geometry.coordinates });
}
}function getPolyline(leg){ //gets steps for leg, combines into one polyline
//console.log(leg);
var legPoints = [];
for(s in leg.steps){
var points = leg.steps[s].polyline.points;
points = polyline.decode(points);
for(p in points){
legPoints.push(points[p]);
}
}
legPolyline = polyline.encode(legPoints);
return legPolyline;
}
