malwoodsantoro · March 4, 2022 04:29
diff --git a/index.html b/index.html
 <!DOCTYPE html>
 <html>

 <head>
  <meta charset="utf-8">
  <title>Create and style clusters</title>
  <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
  <link href="https://api.mapbox.com/mapbox-gl-js/v2.2.0/mapbox-gl.css" rel="stylesheet">
  <script src="https://api.mapbox.com/mapbox-gl-js/v2.2.0/mapbox-gl.js"></script>
  <style>
    body {
      margin: 0;
      padding: 0;
    }

    #map {
      position: absolute;
      top: 0;
      bottom: 0;
      width: 100%;
    }

    #menu {
      position: absolute;
      background: #90eebf;
      padding: 20px;
      font-family: 'Open Sans', sans-serif;
      font-size: 20px;
    }
  </style>
 </head>

 <body>
  <div id="map"></div>
  <div id="menu">
    <h3>Magnitude</h3>
    <div>
      <input type="radio" id="all" name="rtoggle" value="true" checked="">
      <label for="true">All</label>
    </div>
    <div>
      <input type="radio" id="less than 5" name="rtoggle" value="false">
      <label for="false">
        < 5</label>
    </div>
    <div>
      <input type="radio" id="greater than 5" name="rtoggle" value="false">
      <label for="false">> 5</label>
    </div>
  </div>

  <script>
    // less than 5, 5 - 7, greater than 7, all 
    mapboxgl.accessToken = 'pk.eyJ1IjoibWFsLXdvb2QiLCJhIjoiY2oyZ2t2em50MDAyMzJ3cnltMDFhb2NzdiJ9.X-D4Wvo5E5QxeP7K_I3O8w';
    var map = new mapboxgl.Map({
      container: 'map',
      style: 'mapbox://styles/mapbox/dark-v10',
      center: [-103.59179687498357, 40.66995747013945],
      zoom: 0
    });

    map.on('load', function () {
      var currentSource = 'earthquakes';

      addNewClusterSource = (sourceID, filter) => {
        map.addSource(sourceID, {
          type: 'geojson',
          // Point to GeoJSON data. This example visualizes all M1.0+ earthquakes
          // from 12/22/15 to 1/21/16 as logged by USGS' Earthquake hazards program.
          data:
            'https://docs.mapbox.com/mapbox-gl-js/assets/earthquakes.geojson',
          cluster: true,
          clusterMaxZoom: 14, // Max zoom to cluster points on
          clusterRadius: 50, // Radius of each cluster when clustering points (defaults to 50)
          filter: filter
        });
      }

      addNewClusterSource(currentSource, '')

      addNewClusterLayers = (sourceID) => {
        map.addLayer({
          id: 'clusters',
          type: 'circle',
          source: sourceID,
          filter: ['has', 'point_count'],
          paint: {
            'circle-color': [
              'step',
              ['get', 'point_count'],
              '#51bbd6',
              100,
              '#f1f075',
              750,
              '#f28cb1'
            ],
            'circle-radius': [
              'step',
              ['get', 'point_count'],
              20,
              100,
              30,
              750,
              40
            ]
          }
        });

        map.addLayer({
          id: 'cluster-count',
          type: 'symbol',
          source: sourceID,
          filter: ['has', 'point_count'],
          layout: {
            'text-field': '{point_count_abbreviated}',
            'text-font': ['DIN Offc Pro Medium', 'Arial Unicode MS Bold'],
            'text-size': 12
          }
        });

        map.addLayer({
          id: 'unclustered-point',
          type: 'circle',
          source: sourceID,
          filter: ['!', ['has', 'point_count']],
          paint: {
            'circle-color': '#11b4da',
            'circle-radius': 4,
            'circle-stroke-width': 1,
            'circle-stroke-color': '#fff'
          }
        });
      }

      addNewClusterLayers('earthquakes')

      // inspect a cluster on click
      map.on('click', 'clusters', function (e) {
        var features = map.queryRenderedFeatures(e.point, {
          layers: ['clusters']
        });
        var clusterId = features[0].properties.cluster_id;
        map.getSource('earthquakes').getClusterExpansionZoom(
          clusterId,
          function (err, zoom) {
            if (err) return;

            map.easeTo({
              center: features[0].geometry.coordinates,
              zoom: zoom
            });
          }
        );
      });

      // When a click event occurs on a feature in
      // the unclustered-point layer, open a popup at
      // the location of the feature, with
      // description HTML from its properties.
      map.on('click', 'unclustered-point', function (e) {
        var coordinates = e.features[0].geometry.coordinates.slice();
        var mag = e.features[0].properties.mag;
        var tsunami;

        if (e.features[0].properties.tsunami === 1) {
          tsunami = 'yes';
        } else {
          tsunami = 'no';
        }

        // Ensure that if the map is zoomed out such that
        // multiple copies of the feature are visible, the
        // popup appears over the copy being pointed to.
        while (Math.abs(e.lngLat.lng - coordinates[0]) > 180) {
          coordinates[0] += e.lngLat.lng > coordinates[0] ? 360 : -360;
        }

        new mapboxgl.Popup()
          .setLngLat(coordinates)
          .setHTML(
            'magnitude: ' + mag + '<br>Was there a tsunami?: ' + tsunami
          )
          .addTo(map);
      });

      map.on('mouseenter', 'clusters', function () {
        map.getCanvas().style.cursor = 'pointer';
      });
      map.on('mouseleave', 'clusters', function () {
        map.getCanvas().style.cursor = '';
      });

      var magnitudeFilters = document.getElementById('menu');
      var inputs = magnitudeFilters.getElementsByTagName('input');

      function switchMagnitudeFilter(option) {
        map.removeLayer('clusters')
        map.removeLayer('unclustered-point')
        map.removeLayer('cluster-count')
        map.removeSource(currentSource);

        var magnitudeButton = option.target.id;

        if (magnitudeButton === 'less than 5') {
          currentSource = 'less-than-five'
          filter = ['<', ["get", "mag"], 5]
        } else if (magnitudeButton === 'greater than 5') {
          currentSource = 'greater-than-five'
          filter = ['>', ["get", "mag"], 5]
          currentSource = 'greater-than-five'
        } else {
          currentSource = 'all'
          filter = ''
        }
        addNewClusterSource(currentSource, filter);
        addNewClusterLayers(currentSource);
      }

      for (var i = 0; i < inputs.length; i++) {
        inputs[i].onclick = switchMagnitudeFilter;
      }
    });
  </script>

 </body>

 </html>
	<!DOCTYPE html>
	<html>

	<head>
	<meta charset="utf-8">
	<title>Create and style clusters</title>
	<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
	<link href="https://api.mapbox.com/mapbox-gl-js/v2.2.0/mapbox-gl.css" rel="stylesheet">
	<script src="https://api.mapbox.com/mapbox-gl-js/v2.2.0/mapbox-gl.js"></script>
	<style>
	body {
	margin: 0;
	padding: 0;
	}

	#map {
	position: absolute;
	top: 0;
	bottom: 0;
	width: 100%;
	}

	#menu {
	position: absolute;
	background: #90eebf;
	padding: 20px;
	font-family: 'Open Sans', sans-serif;
	font-size: 20px;
	}
	</style>
	</head>

	<body>
	<div id="map"></div>
	<div id="menu">
	<h3>Magnitude</h3>
	<div>
	<input type="radio" id="all" name="rtoggle" value="true" checked="">
	<label for="true">All</label>
	</div>
	<div>
	<input type="radio" id="less than 5" name="rtoggle" value="false">
	<label for="false">
	< 5</label>
	</div>
	<div>
	<input type="radio" id="greater than 5" name="rtoggle" value="false">
	<label for="false">> 5</label>
	</div>
	</div>

	<script>
	// less than 5, 5 - 7, greater than 7, all
	mapboxgl.accessToken = 'pk.eyJ1IjoibWFsLXdvb2QiLCJhIjoiY2oyZ2t2em50MDAyMzJ3cnltMDFhb2NzdiJ9.X-D4Wvo5E5QxeP7K_I3O8w';
	var map = new mapboxgl.Map({
	container: 'map',
	style: 'mapbox://styles/mapbox/dark-v10',
	center: [-103.59179687498357, 40.66995747013945],
	zoom: 0
	});

	map.on('load', function () {
	var currentSource = 'earthquakes';

	addNewClusterSource = (sourceID, filter) => {
	map.addSource(sourceID, {
	type: 'geojson',
	// Point to GeoJSON data. This example visualizes all M1.0+ earthquakes
	// from 12/22/15 to 1/21/16 as logged by USGS' Earthquake hazards program.
	data:
	'https://docs.mapbox.com/mapbox-gl-js/assets/earthquakes.geojson',
	cluster: true,
	clusterMaxZoom: 14, // Max zoom to cluster points on
	clusterRadius: 50, // Radius of each cluster when clustering points (defaults to 50)
	filter: filter
	});
	}

	addNewClusterSource(currentSource, '')

	addNewClusterLayers = (sourceID) => {
	map.addLayer({
	id: 'clusters',
	type: 'circle',
	source: sourceID,
	filter: ['has', 'point_count'],
	paint: {
	'circle-color': [
	'step',
	['get', 'point_count'],
	'#51bbd6',
	100,
	'#f1f075',
	750,
	'#f28cb1'
	],
	'circle-radius': [
	'step',
	['get', 'point_count'],
	20,
	100,
	30,
	750,
	40
	]
	}
	});

	map.addLayer({
	id: 'cluster-count',
	type: 'symbol',
	source: sourceID,
	filter: ['has', 'point_count'],
	layout: {
	'text-field': '{point_count_abbreviated}',
	'text-font': ['DIN Offc Pro Medium', 'Arial Unicode MS Bold'],
	'text-size': 12
	}
	});

	map.addLayer({
	id: 'unclustered-point',
	type: 'circle',
	source: sourceID,
	filter: ['!', ['has', 'point_count']],
	paint: {
	'circle-color': '#11b4da',
	'circle-radius': 4,
	'circle-stroke-width': 1,
	'circle-stroke-color': '#fff'
	}
	});
	}

	addNewClusterLayers('earthquakes')

	// inspect a cluster on click
	map.on('click', 'clusters', function (e) {
	var features = map.queryRenderedFeatures(e.point, {
	layers: ['clusters']
	});
	var clusterId = features[0].properties.cluster_id;
	map.getSource('earthquakes').getClusterExpansionZoom(
	clusterId,
	function (err, zoom) {
	if (err) return;

	map.easeTo({
	center: features[0].geometry.coordinates,
	zoom: zoom
	});
	}
	);
	});

	// When a click event occurs on a feature in
	// the unclustered-point layer, open a popup at
	// the location of the feature, with
	// description HTML from its properties.
	map.on('click', 'unclustered-point', function (e) {
	var coordinates = e.features[0].geometry.coordinates.slice();
	var mag = e.features[0].properties.mag;
	var tsunami;

	if (e.features[0].properties.tsunami === 1) {
	tsunami = 'yes';
	} else {
	tsunami = 'no';
	}

	// Ensure that if the map is zoomed out such that
	// multiple copies of the feature are visible, the
	// popup appears over the copy being pointed to.
	while (Math.abs(e.lngLat.lng - coordinates[0]) > 180) {
	coordinates[0] += e.lngLat.lng > coordinates[0] ? 360 : -360;
	}

	new mapboxgl.Popup()
	.setLngLat(coordinates)
	.setHTML(
	'magnitude: ' + mag + '<br>Was there a tsunami?: ' + tsunami
	)
	.addTo(map);
	});

	map.on('mouseenter', 'clusters', function () {
	map.getCanvas().style.cursor = 'pointer';
	});
	map.on('mouseleave', 'clusters', function () {
	map.getCanvas().style.cursor = '';
	});

	var magnitudeFilters = document.getElementById('menu');
	var inputs = magnitudeFilters.getElementsByTagName('input');

	function switchMagnitudeFilter(option) {
	map.removeLayer('clusters')
	map.removeLayer('unclustered-point')
	map.removeLayer('cluster-count')
	map.removeSource(currentSource);

	var magnitudeButton = option.target.id;

	if (magnitudeButton === 'less than 5') {
	currentSource = 'less-than-five'
	filter = ['<', ["get", "mag"], 5]
	} else if (magnitudeButton === 'greater than 5') {
	currentSource = 'greater-than-five'
	filter = ['>', ["get", "mag"], 5]
	currentSource = 'greater-than-five'
	} else {
	currentSource = 'all'
	filter = ''
	}
	addNewClusterSource(currentSource, filter);
	addNewClusterLayers(currentSource);
	}

	for (var i = 0; i < inputs.length; i++) {
	inputs[i].onclick = switchMagnitudeFilter;
	}
	});
	</script>

	</body>

	</html>