mastersigat/.block

## .block
license: mit

## README.md

      
    Raw
  

              README.md
            
          
    Built with blockbuilder.org

  
## 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" />
<script src="https://api.mapbox.com/mapbox-gl-js/v2.0.1/mapbox-gl.js"></script>
<link href="https://api.mapbox.com/mapbox-gl-js/v2.0.1/mapbox-gl.css" rel="stylesheet" />
<style>
	body { margin: 0; padding: 0; }
	#map { position: absolute; top: 0; bottom: 0; width: 100%; }
</style>
</head>
<body>
<div id="map"></div>

<script>
	mapboxgl.accessToken = 'pk.eyJ1IjoibmluYW5vdW4iLCJhIjoiY2pjdHBoZGlzMnV4dDJxcGc5azJkbWRiYSJ9.o4dZRrdHcgVEKCveOXG1YQ';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/dark-v10',
center: [-1.68, 48.11],
zoom: 10.3,
 pitch : 20,
 minZoom:10.3,
 maxZoom:18
});


// CLUSTER THEMATIQUE

var mag1 = ['match',['get', 'type'],
                ['Appartement'],
                false,
                true
              ];
var mag2 = [
                'match',
                ['get', 'type'],
                ['Maison'],
                false,
                true
              ];

var colors = ['#79d320', '#fe4fc6'];

map.on('load', function () {
map.addSource('earthquakes', {
'type': 'geojson',
'data': 'https://raw.githubusercontent.com/mastersigat/data/main/DVFRM.geojson',
'cluster': true,
'clusterMaxZoom': 15,
'clusterRadius': 50,
'clusterProperties': {
// keep separate counts for each magnitude category in a cluster
'mag1': ['+', ['case', mag1, 1, 0]],
'mag2': ['+', ['case', mag2, 1, 0]]
}
});

map.addLayer({
'id': 'earthquake_label',
'type': 'symbol',
'source': 'earthquakes',
'filter': ['!=', 'cluster', true],
'layout': {
'text-field': [
'number-format',
['get', 'mag'],
{ 'min-fraction-digits': 0, 'max-fraction-digits': 0 }
],
'text-font': ['Open Sans Semibold', 'Arial Unicode MS Bold'],
'text-size': 1
},
'paint': {
'text-color': [
'case',
['<', ['get', 'mag'], 1],
'black',
'white'
]
}
});

var markers = {};
var markersOnScreen = {};

function updateMarkers() {
var newMarkers = {};
var features = map.querySourceFeatures('earthquakes');


for (var i = 0; i < features.length; i++) {
var coords = features[i].geometry.coordinates;
var props = features[i].properties;
if (!props.cluster) continue;
var id = props.cluster_id;

var marker = markers[id];
if (!marker) {
var el = createDonutChart(props);
marker = markers[id] = new mapboxgl.Marker({
element: el
}).setLngLat(coords);
}
newMarkers[id] = marker;

if (!markersOnScreen[id]) marker.addTo(map);
}

for (id in markersOnScreen) {
if (!newMarkers[id]) markersOnScreen[id].remove();
}
markersOnScreen = newMarkers;
}

map.on('data', function (e) {
if (e.sourceId !== 'earthquakes' || !e.isSourceLoaded) return;

map.on('move', updateMarkers);
map.on('moveend', updateMarkers);
updateMarkers();
});
});

function createDonutChart(props) {
var offsets = [];
var counts = [
props.mag1,
props.mag2
];
var total = 0;
for (var i = 0; i < counts.length; i++) {
offsets.push(total);
total += counts[i];
}
var fontSize =
total >= 1000 ? 15 : total >= 100 ? 12 : total >= 6 ? 10 : 10;
var r = total >= 1000 ? 30 : total >= 100 ? 22 : total >= 10 ? 14 : 18;
var r0 = Math.round(r * 0.6);
var w = r * 2;

var html =
'<div><svg width="' +
w +
'" height="' +
w +
'" viewbox="0 0 ' +
w +
' ' +
w +
'" text-anchor="middle" style="font: ' +
fontSize +
'px sans-serif; display: block">';

for (i = 0; i < counts.length; i++) {
html += donutSegment(
offsets[i] / total,
(offsets[i] + counts[i]) / total,
r,
r0,
colors[i]
);
}
html +=
'<circle cx="' +
r +
'" cy="' +
r +
'" r="' +
r0 +
'" fill="white" /><text dominant-baseline="central" transform="translate(' +
r +
', ' +
r +
')">' +
total.toLocaleString() +
'</text></svg></div>';

var el = document.createElement('div');
el.innerHTML = html;
return el.firstChild;
}

function donutSegment(start, end, r, r0, color) {
if (end - start === 1) end -= 0.00001;
var a0 = 2 * Math.PI * (start - 0.25);
var a1 = 2 * Math.PI * (end - 0.25);
var x0 = Math.cos(a0),
y0 = Math.sin(a0);
var x1 = Math.cos(a1),
y1 = Math.sin(a1);
var largeArc = end - start > 0.5 ? 1 : 0;

return [
'<path d="M',
r + r0 * x0,
r + r0 * y0,
'L',
r + r * x0,
r + r * y0,
'A',
r,
r,
0,
largeArc,
1,
r + r * x1,
r + r * y1,
'L',
r + r0 * x1,
r + r0 * y1,
'A',
r0,
r0,
0,
largeArc,
0,
r + r0 * x0,
r + r0 * y0,
'" fill="' + color + '" />'
].join(' ');
}
</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" />
	<script src="https://api.mapbox.com/mapbox-gl-js/v2.0.1/mapbox-gl.js"></script>
	<link href="https://api.mapbox.com/mapbox-gl-js/v2.0.1/mapbox-gl.css" rel="stylesheet" />
	<style>
	body { margin: 0; padding: 0; }
	#map { position: absolute; top: 0; bottom: 0; width: 100%; }
	</style>
	</head>
	<body>
	<div id="map"></div>

	<script>
	mapboxgl.accessToken = 'pk.eyJ1IjoibmluYW5vdW4iLCJhIjoiY2pjdHBoZGlzMnV4dDJxcGc5azJkbWRiYSJ9.o4dZRrdHcgVEKCveOXG1YQ';
	var map = new mapboxgl.Map({
	container: 'map',
	style: 'mapbox://styles/mapbox/dark-v10',
	center: [-1.68, 48.11],
	zoom: 10.3,
	pitch : 20,
	minZoom:10.3,
	maxZoom:18
	});


	// CLUSTER THEMATIQUE

	var mag1 = ['match',['get', 'type'],
	['Appartement'],
	false,
	true
	];
	var mag2 = [
	'match',
	['get', 'type'],
	['Maison'],
	false,
	true
	];

	var colors = ['#79d320', '#fe4fc6'];

	map.on('load', function () {
	map.addSource('earthquakes', {
	'type': 'geojson',
	'data': 'https://raw.githubusercontent.com/mastersigat/data/main/DVFRM.geojson',
	'cluster': true,
	'clusterMaxZoom': 15,
	'clusterRadius': 50,
	'clusterProperties': {
	// keep separate counts for each magnitude category in a cluster
	'mag1': ['+', ['case', mag1, 1, 0]],
	'mag2': ['+', ['case', mag2, 1, 0]]
	}
	});

	map.addLayer({
	'id': 'earthquake_label',
	'type': 'symbol',
	'source': 'earthquakes',
	'filter': ['!=', 'cluster', true],
	'layout': {
	'text-field': [
	'number-format',
	['get', 'mag'],
	{ 'min-fraction-digits': 0, 'max-fraction-digits': 0 }
	],
	'text-font': ['Open Sans Semibold', 'Arial Unicode MS Bold'],
	'text-size': 1
	},
	'paint': {
	'text-color': [
	'case',
	['<', ['get', 'mag'], 1],
	'black',
	'white'
	]
	}
	});

	var markers = {};
	var markersOnScreen = {};

	function updateMarkers() {
	var newMarkers = {};
	var features = map.querySourceFeatures('earthquakes');


	for (var i = 0; i < features.length; i++) {
	var coords = features[i].geometry.coordinates;
	var props = features[i].properties;
	if (!props.cluster) continue;
	var id = props.cluster_id;

	var marker = markers[id];
	if (!marker) {
	var el = createDonutChart(props);
	marker = markers[id] = new mapboxgl.Marker({
	element: el
	}).setLngLat(coords);
	}
	newMarkers[id] = marker;

	if (!markersOnScreen[id]) marker.addTo(map);
	}

	for (id in markersOnScreen) {
	if (!newMarkers[id]) markersOnScreen[id].remove();
	}
	markersOnScreen = newMarkers;
	}

	map.on('data', function (e) {
	if (e.sourceId !== 'earthquakes' \|\| !e.isSourceLoaded) return;

	map.on('move', updateMarkers);
	map.on('moveend', updateMarkers);
	updateMarkers();
	});
	});

	function createDonutChart(props) {
	var offsets = [];
	var counts = [
	props.mag1,
	props.mag2
	];
	var total = 0;
	for (var i = 0; i < counts.length; i++) {
	offsets.push(total);
	total += counts[i];
	}
	var fontSize =
	total >= 1000 ? 15 : total >= 100 ? 12 : total >= 6 ? 10 : 10;
	var r = total >= 1000 ? 30 : total >= 100 ? 22 : total >= 10 ? 14 : 18;
	var r0 = Math.round(r * 0.6);
	var w = r * 2;

	var html =
	'<div><svg width="' +
	w +
	'" height="' +
	w +
	'" viewbox="0 0 ' +
	w +
	' ' +
	w +
	'" text-anchor="middle" style="font: ' +
	fontSize +
	'px sans-serif; display: block">';

	for (i = 0; i < counts.length; i++) {
	html += donutSegment(
	offsets[i] / total,
	(offsets[i] + counts[i]) / total,
	r,
	r0,
	colors[i]
	);
	}
	html +=
	'<circle cx="' +
	r +
	'" cy="' +
	r +
	'" r="' +
	r0 +
	'" fill="white" /><text dominant-baseline="central" transform="translate(' +
	r +
	', ' +
	r +
	')">' +
	total.toLocaleString() +
	'</text></svg></div>';

	var el = document.createElement('div');
	el.innerHTML = html;
	return el.firstChild;
	}

	function donutSegment(start, end, r, r0, color) {
	if (end - start === 1) end -= 0.00001;
	var a0 = 2 * Math.PI * (start - 0.25);
	var a1 = 2 * Math.PI * (end - 0.25);
	var x0 = Math.cos(a0),
	y0 = Math.sin(a0);
	var x1 = Math.cos(a1),
	y1 = Math.sin(a1);
	var largeArc = end - start > 0.5 ? 1 : 0;

	return [
	'<path d="M',
	r + r0 * x0,
	r + r0 * y0,
	'L',
	r + r * x0,
	r + r * y0,
	'A',
	r,
	r,
	0,
	largeArc,
	1,
	r + r * x1,
	r + r * y1,
	'L',
	r + r0 * x1,
	r + r0 * y1,
	'A',
	r0,
	r0,
	0,
	largeArc,
	0,
	r + r0 * x0,
	r + r0 * y0,
	'" fill="' + color + '" />'
	].join(' ');
	}
	</script>

	</body>
	</html>