Cadastre: parcel on click

// Cadastre: a click on a parcel boundary shows the parcel number and cadastral municipality.
const TOKEN = 'YOUR_TOKEN'; // your public token (mx_pk_…) from https://account.mapx.at
// Adds the token to every request MapLibre makes to mapx.at (style, tiles, fonts, sprites), never to other hosts.
const transformRequest = (url) => ({ url: /^https:\/\/([\w-]+\.)?mapx\.at\//.test(url) ? url + (url.includes('?') ? '&' : '?') + 'access_token=' + TOKEN : url });

maplibregl.addProtocol('pmtiles', new pmtiles.Protocol().tile);

const map = new maplibregl.Map({ transformRequest, container: 'map', style: 'https://api.mapx.at/v1/styles/satellite', center: [15.3306, 48.2275], zoom: 18 }); // Melk
map.addControl(new maplibregl.NavigationControl());

map.on('load', () => {
  // Grenzlinien sichtbar machen (im Stil als Ebene "parcel", Quelle "kataster", ab Zoom 16)
  map.setLayoutProperty('parcel', 'visibility', 'visible');
});
map.on('click', (e) => {
  const box = [[e.point.x - 6, e.point.y - 6], [e.point.x + 6, e.point.y + 6]];
  const f = map.queryRenderedFeatures(box, { layers: ['parcel'] })[0];
  const text = f ? `Parcel ${f.properties.gstnr}, cadastral municipality ${f.properties.kgnr}` : 'No parcel boundary hit (visible from zoom 16).';
  new maplibregl.Popup().setLngLat(e.lngLat).setText(text).addTo(map);
});

<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>mapx Beispiel</title>
<link rel="stylesheet" href="https://unpkg.com/maplibre-gl@4.7.1/dist/maplibre-gl.css">
<script src="https://unpkg.com/maplibre-gl@4.7.1/dist/maplibre-gl.js"></script>
<script src="https://unpkg.com/pmtiles@3.2.1/dist/pmtiles.js"></script>
<style>html,body{margin:0;font:14px system-ui,sans-serif}#map{height:70vh}</style>
</head>
<body>
<div id="map"></div>
<script>
// Cadastre: a click on a parcel boundary shows the parcel number and cadastral municipality.
const TOKEN = 'YOUR_TOKEN'; // your public token (mx_pk_…) from https://account.mapx.at
// Adds the token to every request MapLibre makes to mapx.at (style, tiles, fonts, sprites), never to other hosts.
const transformRequest = (url) => ({ url: /^https:\/\/([\w-]+\.)?mapx\.at\//.test(url) ? url + (url.includes('?') ? '&' : '?') + 'access_token=' + TOKEN : url });

maplibregl.addProtocol('pmtiles', new pmtiles.Protocol().tile);

const map = new maplibregl.Map({ transformRequest, container: 'map', style: 'https://api.mapx.at/v1/styles/satellite', center: [15.3306, 48.2275], zoom: 18 }); // Melk
map.addControl(new maplibregl.NavigationControl());

map.on('load', () => {
  // Grenzlinien sichtbar machen (im Stil als Ebene "parcel", Quelle "kataster", ab Zoom 16)
  map.setLayoutProperty('parcel', 'visibility', 'visible');
});
map.on('click', (e) => {
  const box = [[e.point.x - 6, e.point.y - 6], [e.point.x + 6, e.point.y + 6]];
  const f = map.queryRenderedFeatures(box, { layers: ['parcel'] })[0];
  const text = f ? `Parcel ${f.properties.gstnr}, cadastral municipality ${f.properties.kgnr}` : 'No parcel boundary hit (visible from zoom 16).';
  new maplibregl.Popup().setLngLat(e.lngLat).setText(text).addTo(map);
});
</script>
</body>
</html>