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March 5, 2024 16:23
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| <html> | |
| <head> | |
| <script src='https://unpkg.com/maplibre-gl@latest/dist/maplibre-gl.js'></script> | |
| <link href='https://unpkg.com/maplibre-gl@latest/dist/maplibre-gl.css' rel='stylesheet' /> | |
| </head> | |
| <body> | |
| <div id='map' style='width: 400px; height: 300px;'></div> | |
| <button id="switch">switch</button> | |
| <script> | |
| function setLayerSource(layerId, source, sourceLayer) { | |
| const oldLayers = map.getStyle().layers; | |
| const layerIndex = oldLayers.findIndex(l => l.id === layerId); | |
| const layerDef = oldLayers[layerIndex]; | |
| const before = oldLayers[layerIndex + 1] && oldLayers[layerIndex + 1].id; | |
| layerDef.source = source; | |
| if (sourceLayer) { | |
| layerDef['source-layer'] = sourceLayer; | |
| } | |
| map.removeLayer(layerId); | |
| map.addLayer(layerDef, before); | |
| } | |
| var map = new maplibregl.Map({ | |
| container: 'map', | |
| style: { | |
| version: 8, | |
| sources: { | |
| carto: { | |
| type: 'raster', | |
| tiles: ['https://tile.openstreetmap.org/{z}/{x}/{y}.png'], | |
| tileSize: 256, | |
| maxzoom: 19, | |
| }, | |
| multipoints: { | |
| type: 'geojson', | |
| cluster: true, | |
| data: { | |
| type: "FeatureCollection", | |
| features: [ | |
| { | |
| type: "Feature", | |
| geometry: { | |
| type: "MultiPoint", | |
| coordinates: [[0, 0], [1, 1]] | |
| } | |
| }, | |
| { | |
| type: "Feature", | |
| geometry: { | |
| type: "Point", | |
| coordinates: [-1, -1] | |
| } | |
| } | |
| ] | |
| } | |
| }, | |
| }, | |
| layers: [ | |
| { | |
| id: 'background', | |
| type: 'raster', | |
| source: 'carto', | |
| }, | |
| { | |
| id: 'cluster', | |
| type: 'point', | |
| source: 'multipoints', | |
| type: 'circle' | |
| } | |
| ] | |
| }, | |
| center: [0, 0], | |
| zoom: 5 | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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