Live Update Feature
Change an existing feature on your map in real-time by updating its data. Requires Trimble Maps v3.0.0 or later.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="stylesheet" href="https://maps-sdk.trimblemaps.com/v4/trimblemaps-4.2.3.css" />
<script src="https://maps-sdk.trimblemaps.com/v4/trimblemaps-4.2.3.js"></script>
<style>
body { margin: 0; padding: 0; }
#map {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
</style>
</head>
<body>
<div id="map"></div>
<script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script>
TrimbleMaps.setAPIKey('YOUR_API_KEY_HERE');
const map = new TrimbleMaps.Map({
container: 'map',
style: TrimbleMaps.Common.Style.TRANSPORTATION,
zoom: 0,
});
map.on('load', () => {
// We use D3 to fetch the JSON here so that we can parse and use it separately
// from GL JS's use in the added source. You can use any request method (library
// or otherwise) that you want.
d3.json(
'https://developer.trimblemaps.com/maps-sdk/assets/hike.geojson',
(err, data) => {
if (err) throw err;
// save full coordinate list for later
const coordinates = data.features[0].geometry.coordinates;
// start by showing just the first coordinate
data.features[0].geometry.coordinates = [coordinates[0]];
// add it to the map
map.addSource('trace', {type: 'geojson', data});
map.addLayer({
id: 'trace',
type: 'line',
source: 'trace',
paint: {
'line-color': 'yellow',
'line-opacity': 0.75,
'line-width': 5,
},
});
// setup the viewport
map.jumpTo({center: coordinates[0], zoom: 14});
map.setPitch(30);
// on a regular basis, add more coordinates from the saved list and update the map
let i = 0;
const timer = window.setInterval(() => {
if (i < coordinates.length) {
data.features[0].geometry.coordinates.push(coordinates[i]);
map.getSource('trace').setData(data);
map.panTo(coordinates[i]);
i++;
} else {
window.clearInterval(timer);
}
}, 10);
}
);
});
</script>
</body>
</html>
Live Update Feature
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<link rel="stylesheet" href="https://maps-sdk.trimblemaps.com/v4/trimblemaps-4.2.3.css" />
<script src="https://maps-sdk.trimblemaps.com/v4/trimblemaps-4.2.3.js"></script>
<style>
body { margin: 0; padding: 0; }
#map {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
</style>
</head>
<body>
<div id="map"></div>
<script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script>
TrimbleMaps.setAPIKey('YOUR_API_KEY_HERE');
const map = new TrimbleMaps.Map({
container: 'map',
style: TrimbleMaps.Common.Style.TRANSPORTATION,
zoom: 0,
});
map.on('load', () => {
// We use D3 to fetch the JSON here so that we can parse and use it separately
// from GL JS's use in the added source. You can use any request method (library
// or otherwise) that you want.
d3.json(
'https://developer.trimblemaps.com/maps-sdk/assets/hike.geojson',
(err, data) => {
if (err) throw err;
// save full coordinate list for later
const coordinates = data.features[0].geometry.coordinates;
// start by showing just the first coordinate
data.features[0].geometry.coordinates = [coordinates[0]];
// add it to the map
map.addSource('trace', {type: 'geojson', data});
map.addLayer({
id: 'trace',
type: 'line',
source: 'trace',
paint: {
'line-color': 'yellow',
'line-opacity': 0.75,
'line-width': 5,
},
});
// setup the viewport
map.jumpTo({center: coordinates[0], zoom: 14});
map.setPitch(30);
// on a regular basis, add more coordinates from the saved list and update the map
let i = 0;
const timer = window.setInterval(() => {
if (i < coordinates.length) {
data.features[0].geometry.coordinates.push(coordinates[i]);
map.getSource('trace').setData(data);
map.panTo(coordinates[i]);
i++;
} else {
window.clearInterval(timer);
}
}, 10);
}
);
});
</script>
</body>
</html>