Created
March 21, 2019 17:36
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Trivial example to calculate route distances from a fixed point to location(s) specified as user input, using HERE Location Services.
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8" /> | |
| <script src="http://js.api.here.com/v3/3.0/mapsjs-core.js" type="text/javascript" charset="utf-8"></script> | |
| <script src="http://js.api.here.com/v3/3.0/mapsjs-service.js" type="text/javascript" charset="utf-8"></script> | |
| </head> | |
| <body> | |
| <form onsubmit="geocodeAndRoute(); return false"> | |
| <input type="text" id="address"><input type="submit"> | |
| </form> | |
| <table> | |
| <thead> | |
| <tr> | |
| <th>Location</th> | |
| <th>Distance to drive</th> | |
| </tr> | |
| </thead> | |
| <tbody id="resultsTable"></tbody> | |
| </table> | |
| <script> | |
| const sourceLocation = '52.5214,13.41555' | |
| const platform = new H.service.Platform({ | |
| 'app_id': 'YOUR_APP_ID_GOES_HERE', | |
| 'app_code': 'YOUR_APP_CODE_GOES_HERE' | |
| }) | |
| const geocoder = platform.getGeocodingService() | |
| const router = platform.getRoutingService() | |
| const onGeocodeResult = (result) => { | |
| const table = document.getElementById('resultsTable') | |
| table.innerHTML = '' | |
| if (result.Response.View.length) { | |
| const locations = result.Response.View[0].Result | |
| for (loc of locations) { | |
| const row = table.insertRow(-1) | |
| row.insertCell(-1).innerHTML = loc.Location.Address.Label | |
| const { Latitude, Longitude } = loc.Location.DisplayPosition | |
| const routeCell = row.insertCell(-1) | |
| const routingParameters = { | |
| 'mode': 'fastest;car;traffic:disabled', | |
| 'waypoint0': 'geo!' + sourceLocation, | |
| 'waypoint1': 'geo!' + Latitude + ',' + Longitude, | |
| 'representation': 'overview' | |
| } | |
| // calculate each route separately (alternatively, could use the Matrix Routing API) | |
| router.calculateRoute(routingParameters, routeResult => { | |
| if (routeResult.response) { | |
| const distKm = routeResult.response.route[0].summary.distance / 1000 | |
| routeCell.innerHTML = distKm | |
| } else { // no route found | |
| routeCell.innerHTML = 'unknown' | |
| } | |
| }, (error) => alert(error.message)) | |
| } | |
| } else { | |
| // no matching location found | |
| } | |
| } | |
| function geocodeAndRoute() { | |
| const address = document.getElementById('address').value | |
| const geoparams = { searchText: address } | |
| geocoder.geocode(geoparams, onGeocodeResult, (error) => alert(error.message)) | |
| } | |
| </script> | |
| </body> | |
| </html> |
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