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@LouisaKB
Created January 22, 2019 12:41
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<html>
<head>
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet/v1.3.0/leaflet.css" />
<script src="http://cdn.leafletjs.com/leaflet/v1.3.0/leaflet.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.0.0/jquery.min.js"></script>
</head>
<body>
<div id="map" style="height: 100%;"></div>
<script>
// The name of the starting location. We will have to geocode this to coordinates.
var startingLocation = "The White House, DC";
// The departure time in an ISO format.
var departureTime = "2018-07-04T09:00:00-0500";
// Travel time in seconds. We want 1 hour travel time so it is 60 minutes x 60 seconds.
var travelTime = 60*60;
// These headers are needed to authenticate the request
var headers = {
"X-Application-Id": "<your app id>",
"X-Api-Key": "<your app key>"
};
// Sends the geocoding request.
function sendGeocodingRequest(location) {
// The request for the geocoder. Reference: http://docs.traveltimeplatform.com/reference/geocoding-search/
var request = {
query: location
};
$.ajax({
url : "http://api.traveltimeapp.com/v4/geocoding/search",
type: "get",
"headers": headers,
data: request,
contentType: "application/json; charset=UTF-8",
success: sendTimeMapRequest
}})
};
// Sends the request of the Time Map multipolygon.
function sendTimeMapRequest(geocodingResponse) {
// The request for Time Map. Reference: http://docs.traveltimeplatform.com/reference/time-map/
var coords = data.features[0].geometry.coordinates;
var latLng = { lat: coords[1], lng: coords[0] };
var request = {
departure_searches: [ {
id: "first_location",
"coords": coords,
transportation: {
type: "public_transport"
},
departure_time: departureTime,
travel_time: travelTime
} ],
arrival_searches: []
};
$.ajax({
url: "http://api.traveltimeapp.com/v4/time-map",
type: "post",
"headers": headers,
data: JSON.stringify(request),
contentType: "application/json; charset=UTF-8",
success: drawTimeMap(setupMap([coords.lat, coords.lng]))
});
};
// A helper function that converts [{lat: <lat>, lng: <lng>}, ...] to a [[<lat>, <lng>], ...] format.
function ringCoordsHashToArray(ring) {
return ring.map((latLng) => { return [latLng.lat, latLng.lng]; } );
};
//Map set up
function setupMap(markerCoords) {
var osmUrl="http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png";
var osmTileLayer = L.tileLayer(osmUrl, {minZoom: 8, maxZoom: 15});
var map = L.map("map").addLayer(osmTileLayer);
L.marker(markerCoords).addTo(map);
return map;
};
// Draws the resulting multipolygon from the response on the map.
function drawTimeMap(map) {
// We are returning a function so that it can be easily used in the success parameter of the ajax method.
return (response) => {
// Reference for the response: http://docs.traveltimeplatform.com/reference/time-map/#response-body-json-attributes
var shapesCoords = response.results[0].shapes.map((polygon) => {
var shell = ringCoordsHashToArray(polygon.shell);
var holes = polygon.holes.map(ringCoordsHashToArray);
return [shell].concat(holes);
})
var polygon = L.polygon(shapesCoords, {color: 'red'});
polygon.addTo(map);
map.fitBounds(polygon.getBounds());
};
};
// Begins the creation of the Time Map shape.
sendGeocodingRequest(startingLocation);
</script>
</body>
</html>
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