How to force a close spider after adding a new group of markers? - leaflet

I use the following libraries:
leaflet.js
leaflet.markercluster.js
leaflet.subgroup.js
and my own script.
I have 3 marker types, all in a different subgroups. 11 Markers are on the same location. When I open the cluster the spider is shown, on unchecking 1 marker type, the spider is closed and the counter shows the right value. When I reopen the cluster, modified spider is shown.
Checking the marker type does not put the extra spider-marker on the screen, but also does not close the spider.
How can I force the spider to be closed?
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Bee-Idees kaart</title>
<link rel="stylesheet" href="https://unpkg.com/leaflet#1.3.1/dist/leaflet.css" />
<link rel="stylesheet" href="https://unpkg.com/leaflet.markercluster#1.3.0/dist/MarkerCluster.css" />
<link rel="stylesheet" href="https://unpkg.com/leaflet.markercluster#1.3.0/dist/MarkerCluster.Default.css" />
<script type='text/javascript' src='https://unpkg.com/leaflet#1.3.1/dist/leaflet.js'></script>
<script type='text/javascript' src='https://unpkg.com/leaflet.markercluster#1.3.0/dist/leaflet.markercluster.js'></script>
<script type='text/javascript' src='https://unpkg.com/leaflet.featuregroup.subgroup#1.0.2/dist/leaflet.featuregroup.subgroup.js'></script>
</head>
<body>
<div id="map" style="height: 580px; border: 1px solid #AAA;"></div>
</body>
<script>
markers = [
{
"name": "Moordrecht",
"lat": 52.019716,
"lng": 5.183973,
"marker": "green"
},
{
"name": "Zoetermeer",
"lat": 52.046985,
"lng": 4.478968,
"marker": "red"
},
{
"name": "Gouda",
"lat": 52.021616,
"lng": 4.687917,
"marker": "green"
},
{
"name": "Gouda 2",
"lat": 52.021616,
"lng": 4.687917,
"marker": "blue"
},
{
"name": "Gouda 3",
"lat": 52.021616,
"lng": 4.687917,
"marker": "red"
}
];
</script>
<script>
var iconBase = 'css\\icons\\';
// Standard fields
var groupLabel = [];
groupLabel[0] = "Red";
groupLabel[1] = "Blue";
groupLabel[2] = "Green";
var map = L.map('map', {
center: [52.021616, 4.85],
zoom: 10
});
L.tileLayer('http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: '© OpenStreetMap contributors',
subdomains: ['a', 'b', 'c']
}).addTo(map);
var mcg = L.markerClusterGroup(),
group0 = L.featureGroup.subGroup(mcg),
group1 = L.featureGroup.subGroup(mcg),
group2 = L.featureGroup.subGroup(mcg),
control = L.control.layers(null, null, { collapsed: false }), i, a, title, m;
mcg.addTo(map);
var markerClusters = L.markerClusterGroup();
for (var i = 0; i < markers.length; ++i) {
var iconName = iconBase + markers[i].marker + ".png";
var myIcon = L.icon({ iconUrl: iconName, iconAnchor: [20, 40] })
var popup = '<h2>' + markers[i].name + '</h2>';
var m = L.marker( [markers[i].lat, markers[i].lng], {icon: myIcon, title: markers[i].name} )
.bindPopup( popup );
if (markers[i].marker === "red") { m.addTo(group0);}
else if (markers[i].marker === "blue") { m.addTo(group1); }
else if (markers[i].marker === "green") { m.addTo(group2); }
}
control.addOverlay(group0, groupLabel[0]);
control.addOverlay(group1, groupLabel[1]);
control.addOverlay(group2, groupLabel[2]);
control.addTo(map);
group0.addTo(map);
group1.addTo(map);
group2.addTo(map);
map.addLayer(mcg);
map.on('overlayadd', function() {
// How can I close the spider
});
map.on('overlayremove', function() {
});
</script>
</html>

Pasted the code provided in your question into Plunker for a live demo: https://plnkr.co/edit/ZzKRs5NnrJeWfBKWOA3R?p=preview
Hum looks like you are hitting a bug in Leaflet.markercluster.
When you tick in your SubGroup in the Layers Control, the former will use the parent group's (mcg in your case) addLayers method if it exists.
While MCG addLayer (single) correctly unspiderfies, this step is missing in addLayers (batch).
Reproducing the bug with a more simple example: https://plnkr.co/edit/G4GAjax5fi3LUqJRLLPN?p=preview (without Leaflet.FeatureGroup.SubGroup plugin)
Then it should be quite simple to fix this bug: simply unspiderfy, similarly to how it is done in addLayer:
if (this._map && this._unspiderfy) {
this._unspiderfy();
}
Updated simple example: https://plnkr.co/edit/lgvRtiRo7nh9VaWuI0RM?p=preview
Updated your code: https://plnkr.co/edit/CjjcHlZW6vpJ6075Ma3F?p=preview

Related

How to draw svg markers on PixiOverlay?

I am trying to draw svg markers on a PixiOverlay.js (a drawing overlay using Pixi.js). Completely new to Pixi myself, I think I have put something together that draws a diamond shape, see first code snippet (if it is not correct, or needs improvement let me know)
On pixiOverlay github page there is a nice demo that renders lots of polygons on a map. I have stripped this demo down to its bare minimum (see second code snippet below). In this code there is a drawPoly function which as the name suggests, draws the polygons.
I want to replace that with another function that just draws the diamond-shaped svg marker at some predefined point (could be the first point in the polygon coordinates for example, or just a random one)
How can I do this please?
In real life I have quite a few of these markers, all some geometric shape like triangles, stars, squares, circles, etc, and in total there will be several thousands of them (like 100K or even more, depending on the zoom level ofcourse. At zoom=0 could be close to a million)
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<script src='https://d157l7jdn8e5sf.cloudfront.net/dev/pixi.js'></script>
<!--<script src="https://cdn.rawgit.com/manubb/Leaflet.PixiOverlay/master/docs/js/example.min.js">--></script>
<script id="rendered-js">
var renderer;
renderer = PIXI.autoDetectRenderer();
document.body.appendChild(renderer.view);
var graphics = new PIXI.Graphics();
graphics.lineStyle(5, 0x00FF00, 1);
graphics.moveTo(0, 75);
graphics.lineTo(50, 0);
graphics.lineTo(100, 75);
graphics.lineTo(50, 150);
graphics.lineTo(0, 75);
graphics.cacheAsBitmap = true;
renderer.render(graphics);
</script>
</body>
</html>
<!DOCTYPE html>
<html style="height: 100%; margin: 0;">
<head>
<title>Leaflet.PixiOverlay example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<!--jquery -->
<script src="https://code.jquery.com/jquery-3.3.1.js"></script>
<!--d3 -->
<script src='https://d3js.org/d3.v4.min.js'></script>
<!-- leaflet v 1.0.3 -->
<link rel="stylesheet" href="https://unpkg.com/leaflet#1.0.3/dist/leaflet.css"/>
<script src="https://unpkg.com/leaflet#1.0.3/dist/leaflet-src.js"></script>
<!-- I think this Pixi.js and PixiOverlay.js in one file?? -->
<script src="https://cdn.rawgit.com/manubb/Leaflet.PixiOverlay/master/docs/js/example.min.js"></script>
</head>
<body style="height: 100%; margin: 0; overflow: hidden;">
<div id="mymap" style="height: 100%; width: 100%;" >
</div>
<script>
var countries =
{
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"properties": {"name": "UK"},
"geometry": {
"type": "Polygon",
"coordinates": [
[
[-4.965, 58.58], [-5.97, 57.58], [-6.459, 56.31], [-5.05, 54.72],[-3.47, 54.36], [-4.08, 53.27],[-5.22, 51.78],[-3.38, 51.37],[-5.58, 50.12], [1.31, 51.09],[0.61, 51.42], [1.66, 52.69],[0.04, 52.88], [0.39, 53.40],[-2.32, 55.97], [-1.80, 57.53],[-3.95, 57.58], [-3.03, 58.60], [-4.96, 58.58],
]
]
}
},
{
"type": "Feature",
"properties": {"name": "France"},
"geometry": {
"type": "Polygon",
"coordinates": [
[
[2.54, 51.09],[-4.65, 48.37],[-1.23, 46.01],[-1.49, 43.61],[3.03, 42.45],[3.64, 43.45],[7.69, 43.77], [5.97, 46.37],[8.04, 48.98],[2.54, 51.09],
]
]
}
}
]
};
function drawPoly(color, alpha, project, container) {
return function (poly) {
var shape = new PIXI.Polygon(poly[0].map(function (point) {
var proj = project([point[1], point[0]]);
return new PIXI.Point(proj.x, proj.y);
}));
container.beginFill(color, alpha);
container.drawShape(shape);
};
}
function renderChart() {
var map = L.map('mymap').setView(new L.LatLng(50, 1.0), 5);
L.tileLayer('http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
minZoom: 0,
maxZoom: 9
}).addTo(map);
map.zoomControl.setPosition('bottomright');
var firstDraw = true;
var pixiContainer = new PIXI.Graphics();
var doubleBuffering = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
var pixiOverlay = L.pixiOverlay(function (utils) {
var container = utils.getContainer();
var renderer = utils.getRenderer();
var project = utils.latLngToLayerPoint;
var bounds;
if (firstDraw) {
countries.features.forEach(function (feature, index) {
var color = 0xFF0000,
alpha = 0.8;
if (feature.geometry === null) return;
if (feature.geometry.type === 'Polygon') {
bounds = L.bounds(feature.geometry.coordinates[0]);
drawPoly(color, alpha, project, container)(feature.geometry.coordinates);
}
});
}
firstDraw = false;
renderer.render(container);
}, pixiContainer, {
doubleBuffering: doubleBuffering,
destroyInteractionManager: true
});
pixiOverlay.addTo(map);
};
renderChart()
</script>
</body>
</html>
Just as drawPoly() make another function for drawMarker(), put your marker code in it and pass the container (as done in the example you gave).
I have used your example:
<!DOCTYPE html>
<html style="height: 100%; margin: 0;">
<head>
<title>Leaflet.PixiOverlay example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<!--jquery -->
<script src="https://code.jquery.com/jquery-3.3.1.js"></script>
<!--d3 -->
<script src='https://d3js.org/d3.v4.min.js'></script>
<!-- leaflet v 1.0.3 -->
<link rel="stylesheet" href="https://unpkg.com/leaflet#1.0.3/dist/leaflet.css"/>
<script src="https://unpkg.com/leaflet#1.0.3/dist/leaflet-src.js"></script>
<!-- I think this Pixi.js and PixiOverlay.js in one file?? -->
<script src="https://cdn.rawgit.com/manubb/Leaflet.PixiOverlay/master/docs/js/example.min.js"></script>
</head>
<body style="height: 100%; margin: 0; overflow: hidden;">
<div id="mymap" style="height: 100%; width: 100%;" >
</div>
<script>
var countries =
{
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"properties": {"name": "UK"},
"geometry": {
"type": "Polygon",
"coordinates": [
[
[-4.965, 58.58], [-5.97, 57.58], [-6.459, 56.31], [-5.05, 54.72],[-3.47, 54.36], [-4.08, 53.27],[-5.22, 51.78],[-3.38, 51.37],[-5.58, 50.12], [1.31, 51.09],[0.61, 51.42], [1.66, 52.69],[0.04, 52.88], [0.39, 53.40],[-2.32, 55.97], [-1.80, 57.53],[-3.95, 57.58], [-3.03, 58.60], [-4.96, 58.58],
]
]
}
},
{
"type": "Feature",
"properties": {"name": "France"},
"geometry": {
"type": "Polygon",
"coordinates": [
[
[2.54, 51.09],[-4.65, 48.37],[-1.23, 46.01],[-1.49, 43.61],[3.03, 42.45],[3.64, 43.45],[7.69, 43.77], [5.97, 46.37],[8.04, 48.98],[2.54, 51.09],
]
]
}
}
]
};
function drawMarker(container, coords)
{
var graphics = new PIXI.Graphics();
graphics.lineStyle(10, 0xFFF0000, 1);
graphics.moveTo(0, 75);
graphics.lineTo(50, 0);
graphics.lineTo(100, 75);
graphics.lineTo(50, 150);
graphics.lineTo(0, 75);
graphics.cacheAsBitmap = true;
//graphics.width = 1000;
posX = 3000; //just a temp value
posY = 2000; // just a temp value
graphics.x = posX;
graphics.y = posY;
console.log(graphics.y);
container.addChild(graphics);
}
function drawPoly(color, alpha, project, container) {
return function (poly) {
var shape = new PIXI.Polygon(poly[0].map(function (point) {
var proj = project([point[1], point[0]]);
return new PIXI.Point(proj.x, proj.y);
}));
container.beginFill(color, alpha);
container.drawShape(shape);
};
}
function renderChart() {
var map = L.map('mymap').setView(new L.LatLng(50, 1.0), 5);
L.tileLayer('http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
minZoom: 0,
maxZoom: 9
}).addTo(map);
map.zoomControl.setPosition('bottomright');
var firstDraw = true;
var pixiContainer = new PIXI.Graphics();
var doubleBuffering = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
var pixiOverlay = L.pixiOverlay(function (utils) {
var container = utils.getContainer();
var renderer = utils.getRenderer();
var project = utils.latLngToLayerPoint;
var bounds;
if (firstDraw) {
countries.features.forEach(function (feature, index) {
var color = 0xFF0000,
alpha = 0.8;
if (feature.geometry === null) return;
if (feature.geometry.type === 'Polygon') {
bounds = L.bounds(feature.geometry.coordinates[0]);
// drawPoly(color, alpha, project, container)(feature.geometry.coordinates);
drawMarker(container, feature.geometry.coordinates);
}
});
}
firstDraw = false;
renderer.render(container);
}, pixiContainer, {
doubleBuffering: doubleBuffering,
destroyInteractionManager: true
});
pixiOverlay.addTo(map);
};
renderChart()
</script>
</body>
</html>

How to use supercluster

I am new to mapbox.
I need to use the supercluster project of mapbox in order to plot 6 millions of gps in a map.
i tried to use the demo in localhost but i only get an empty map !?
this is my code in index.html :
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Supercluster Leaflet demo</title>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.0.3/leaflet.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.0.3/leaflet.js"></script>
<link rel="stylesheet" href="cluster.css" />
<style>
html, body, #map {
height: 100%;
margin: 0;
}
</style>
</head>
<body>
<div id="map"></div>
<script src="index.js"></script>
<script src="https://unpkg.com/supercluster#3.0.2/dist/supercluster.min.js">
var index = supercluster({
radius: 40,
maxZoom: 16
});
index.load(GeoObs.features);
index.getClusters([-180, -85, 180, 85], 2);
</script>
</body>
</html>
Note : GeoObs is my geojson file
what is wrong ?
FWIW here is a self-contained example of how to use supercluster, without a Web Worker. It is also simply based on the repo demo.
var map = L.map('map').setView([0, 0], 0);
// Empty Layer Group that will receive the clusters data on the fly.
var markers = L.geoJSON(null, {
pointToLayer: createClusterIcon
}).addTo(map);
// Update the displayed clusters after user pan / zoom.
map.on('moveend', update);
function update() {
if (!ready) return;
var bounds = map.getBounds();
var bbox = [bounds.getWest(), bounds.getSouth(), bounds.getEast(), bounds.getNorth()];
var zoom = map.getZoom();
var clusters = index.getClusters(bbox, zoom);
markers.clearLayers();
markers.addData(clusters);
}
// Zoom to expand the cluster clicked by user.
markers.on('click', function(e) {
var clusterId = e.layer.feature.properties.cluster_id;
var center = e.latlng;
var expansionZoom;
if (clusterId) {
expansionZoom = index.getClusterExpansionZoom(clusterId);
map.flyTo(center, expansionZoom);
}
});
// Retrieve Points data.
var placesUrl = 'https://cdn.rawgit.com/mapbox/supercluster/v4.0.1/test/fixtures/places.json';
var index;
var ready = false;
jQuery.getJSON(placesUrl, function(geojson) {
// Initialize the supercluster index.
index = supercluster({
radius: 60,
extent: 256,
maxZoom: 18
}).load(geojson.features); // Expects an array of Features.
ready = true;
update();
});
function createClusterIcon(feature, latlng) {
if (!feature.properties.cluster) return L.marker(latlng);
var count = feature.properties.point_count;
var size =
count < 100 ? 'small' :
count < 1000 ? 'medium' : 'large';
var icon = L.divIcon({
html: '<div><span>' + feature.properties.point_count_abbreviated + '</span></div>',
className: 'marker-cluster marker-cluster-' + size,
iconSize: L.point(40, 40)
});
return L.marker(latlng, {
icon: icon
});
}
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: '© OpenStreetMap contributors'
}).addTo(map);
<link rel="stylesheet" href="https://unpkg.com/leaflet#1.3.1/dist/leaflet.css" integrity="sha512-Rksm5RenBEKSKFjgI3a41vrjkw4EVPlJ3+OiI65vTjIdo9brlAacEuKOiQ5OFh7cOI1bkDwLqdLw3Zg0cRJAAQ==" crossorigin="" />
<link rel="stylesheet" href="https://cdn.rawgit.com/mapbox/supercluster/v4.0.1/demo/cluster.css" />
<script src="https://unpkg.com/leaflet#1.3.1/dist/leaflet-src.js" integrity="sha512-IkGU/uDhB9u9F8k+2OsA6XXoowIhOuQL1NTgNZHY1nkURnqEGlDZq3GsfmdJdKFe1k1zOc6YU2K7qY+hF9AodA==" crossorigin=""></script>
<script src="https://unpkg.com/supercluster#4.0.1/dist/supercluster.js"></script>
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<div id="map" style="height: 180px"></div>
var map = L.map('map').setView([0, 0], 0);
// Empty Layer Group that will receive the clusters data on the fly.
var markers = L.geoJSON(null, {
pointToLayer: createClusterIcon
}).addTo(map);
// Update the displayed clusters after user pan / zoom.
map.on('moveend', update);
function update() {
if (!ready) return;
var bounds = map.getBounds();
var bbox = [bounds.getWest(), bounds.getSouth(), bounds.getEast(), bounds.getNorth()];
var zoom = map.getZoom();
var clusters = index.getClusters(bbox, zoom);
markers.clearLayers();
markers.addData(clusters);
}
// Zoom to expand the cluster clicked by user.
markers.on('click', function(e) {
var clusterId = e.layer.feature.properties.cluster_id;
var center = e.latlng;
var expansionZoom;
if (clusterId) {
expansionZoom = index.getClusterExpansionZoom(clusterId);
map.flyTo(center, expansionZoom);
}
});
// Retrieve Points data.
var placesUrl = 'https://cdn.rawgit.com/mapbox/supercluster/v4.0.1/test/fixtures/places.json';
var index;
var ready = false;
jQuery.getJSON(placesUrl, function(geojson) {
// Initialize the supercluster index.
index = supercluster({
radius: 60,
extent: 256,
maxZoom: 18
}).load(geojson.features); // Expects an array of Features.
ready = true;
update();
});
function createClusterIcon(feature, latlng) {
if (!feature.properties.cluster) return L.marker(latlng);
var count = feature.properties.point_count;
var size =
count < 100 ? 'small' :
count < 1000 ? 'medium' : 'large';
var icon = L.divIcon({
html: '<div><span>' + feature.properties.point_count_abbreviated + '</span></div>',
className: 'marker-cluster marker-cluster-' + size,
iconSize: L.point(40, 40)
});
return L.marker(latlng, {
icon: icon
});
}
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: '© OpenStreetMap contributors'
}).addTo(map);
<link rel="stylesheet" href="https://unpkg.com/leaflet#1.3.1/dist/leaflet.css" integrity="sha512-Rksm5RenBEKSKFjgI3a41vrjkw4EVPlJ3+OiI65vTjIdo9brlAacEuKOiQ5OFh7cOI1bkDwLqdLw3Zg0cRJAAQ==" crossorigin="" />
<link rel="stylesheet" href="https://cdn.rawgit.com/mapbox/supercluster/v4.0.1/demo/cluster.css" />
<script src="https://unpkg.com/leaflet#1.3.1/dist/leaflet-src.js" integrity="sha512-IkGU/uDhB9u9F8k+2OsA6XXoowIhOuQL1NTgNZHY1nkURnqEGlDZq3GsfmdJdKFe1k1zOc6YU2K7qY+hF9AodA==" crossorigin=""></script>
<script src="https://unpkg.com/supercluster#4.0.1/dist/supercluster.js"></script>
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<div id="map" style="height: 180px"></div>
var map = L.map('map').setView([0, 0], 0);
// Empty Layer Group that will receive the clusters data on the fly.
var markers = L.geoJSON(null, {
pointToLayer: createClusterIcon
}).addTo(map);
// Update the displayed clusters after user pan / zoom.
map.on('moveend', update);
function update() {
if (!ready) return;
var bounds = map.getBounds();
var bbox = [bounds.getWest(), bounds.getSouth(), bounds.getEast(), bounds.getNorth()];
var zoom = map.getZoom();
var clusters = index.getClusters(bbox, zoom);
markers.clearLayers();
markers.addData(clusters);
}
// Zoom to expand the cluster clicked by user.
markers.on('click', function(e) {
var clusterId = e.layer.feature.properties.cluster_id;
var center = e.latlng;
var expansionZoom;
if (clusterId) {
expansionZoom = index.getClusterExpansionZoom(clusterId);
map.flyTo(center, expansionZoom);
}
});
// Retrieve Points data.
var placesUrl = 'https://dev.infrapedia.com/api/assets/map/facilities.points.json';
var index;
var ready = false;
jQuery.getJSON(placesUrl, function(geojson) {
// Initialize the supercluster index.
index = supercluster({
radius: 60,
extent: 256,
maxZoom: 18
}).load(geojson.features); // Expects an array of Features.
ready = true;
update();
});
function createClusterIcon(feature, latlng) {
if (!feature.properties.cluster) return L.marker(latlng);
var count = feature.properties.point_count;
var size =
count < 100 ? 'small' :
count < 1000 ? 'medium' : 'large';
var icon = L.divIcon({
html: '<div><span>' + feature.properties.point_count_abbreviated + '</span></div>',
className: 'marker-cluster marker-cluster-' + size,
iconSize: L.point(40, 40)
});
return L.marker(latlng, {
icon: icon
});
}
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: '© OpenStreetMap contributors'
}).addTo(map);
<link rel="stylesheet" href="https://unpkg.com/leaflet#1.3.1/dist/leaflet.css" integrity="sha512-Rksm5RenBEKSKFjgI3a41vrjkw4EVPlJ3+OiI65vTjIdo9brlAacEuKOiQ5OFh7cOI1bkDwLqdLw3Zg0cRJAAQ==" crossorigin="" />
<link rel="stylesheet" href="https://cdn.rawgit.com/mapbox/supercluster/v4.0.1/demo/cluster.css" />
<script src="https://unpkg.com/leaflet#1.3.1/dist/leaflet-src.js" integrity="sha512-IkGU/uDhB9u9F8k+2OsA6XXoowIhOuQL1NTgNZHY1nkURnqEGlDZq3GsfmdJdKFe1k1zOc6YU2K7qY+hF9AodA==" crossorigin=""></script>
<script src="https://unpkg.com/supercluster#4.0.1/dist/supercluster.js"></script>
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<div id="map" style="height: 180px"></div>
I Solved my issue.
to use the supercluster project you need :
1) download and install : node and npm
2) with npm install supercluster: npm i supercluster
then you will get a folder named node_modules in which you will find supercluster folder under it copy the folder named dist (node_modules>supercluster>dist)
3) download from github the project supercluster here you will get a folder named supercluster-master past in it the folder dist copied in step 2)
Now you can test it by selecting index.html into your browser (supercluster-master>demo>index.html)
if you want to test another JSON or GEOJSON file just:
1) put this file under fixtures folder
(supercluster-master>test>fixtures)
then
2) open worker.js (supercluster-master>demo>worker.js) and change the first variable of the geojson function to point on that file
example :
getJSON('../test/fixtures/myFile.geojson', function (geojson) {
Alternatively
you can use the super-cluster algorithme directley in mapbox gl js mapBox gl js example or with jupyter version;mapbox-jupyter mapbox-jupyter example

Leaflet zooms so now and than too much on clicking a cluster

Leaflet zooms so now and than too much on clicking a cluster.
A small part of 1 marker is shown on the right and a small part from the other marker is shown on the left side of the map.
My workaround is counting markers in scope and re-adjust the zoomlevel when the counter = 0.
Shouldn't that be in the zoomcalculation of leaflet?
The zoom correction:
mcg.on('clusterclick', function () {
if (markersInScope == 0) {
var zoom = map.getZoom();
map.setZoom(zoom - 1);
}
});
You could try adjusting the zoom to fit the bounds of the mcg and add some padding
mcg.on('clusterclick', function () {
map.fitBounds(mcg.getBounds().pad(0.5));
}
});
If you add the markers to a featureGroup, the bounds for the group will available to you:
Here is a sample file from Leaflet:
<!DOCTYPE html>
<html>
<head>
<title>Leaflet debug page</title>
<link rel="stylesheet" href="../../dist/leaflet.css" />
<link rel="stylesheet" href="../css/screen.css" />
<script src="../leaflet-include.js"></script>
</head>
<body>
<div id="map" style="width: 600px; height: 600px; border: 1px solid #ccc"></div>
<button onclick="geojsonLayerBounds();">Show GeoJSON layer bounds</button>
<button onclick="featureGroupBounds();">Show feature group bounds</button>
<script src="geojson-sample.js"></script>
<script>
var osmUrl = 'https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png',
osmAttrib = '© OpenStreetMap contributors',
osm = L.tileLayer(osmUrl, {maxZoom: 18, attribution: osmAttrib}),
rectangle,
featureGroup;
var map = new L.Map('map', {
center: new L.LatLng(0.78, 102.37),
zoom: 7,
layers: [osm]
});
var geojson = L.geoJson(geojsonSample, {
style: function (feature) {
return {color: feature.properties.color};
},
onEachFeature: function (feature, layer) {
var popupText = 'geometry type: ' + feature.geometry.type;
if (feature.properties.color) {
popupText += '<br/>color: ' + feature.properties.color
}
layer.bindPopup(popupText);
}
});
geojson.addLayer(new L.Marker(new L.LatLng(2.745530718801952, 105.194091796875)))
var eye1 = new L.Marker(new L.LatLng(-0.7250783020332547, 101.8212890625));
var eye2 = new L.Marker(new L.LatLng(-0.7360637370492077, 103.2275390625));
var nose = new L.Marker(new L.LatLng(-1.3292264529974207, 102.5463867187));
var mouth = new L.Polyline([
new L.LatLng(-1.3841426927920029, 101.7333984375),
new L.LatLng(-1.6037944300589726, 101.964111328125),
new L.LatLng(-1.6806671337507222, 102.249755859375),
new L.LatLng(-1.7355743631421197, 102.67822265625),
new L.LatLng(-1.5928123762763, 103.0078125),
new L.LatLng(-1.3292264529974207, 103.3154296875)
]);
map.addLayer(eye1).addLayer(eye2).addLayer(nose).addLayer(mouth);
featureGroup = new L.FeatureGroup([eye1, eye2, nose, mouth]);
map.addLayer(geojson);
map.addLayer(featureGroup);
function geojsonLayerBounds() {
if (rectangle) {
rectangle.setBounds(geojson.getBounds());
} else {
rectangle = new L.Rectangle(geojson.getBounds());
map.addLayer(rectangle);
}
}
function featureGroupBounds() {
if (rectangle) {
rectangle.setBounds(featureGroup.getBounds());
} else {
rectangle = new L.Rectangle(featureGroup.getBounds());
map.addLayer(rectangle);
}
}
</script>
</body>
</html>

Group Kendo ui chart category axis Date label rounding

On my below Kendo UI chart, I always wanted to show exactly 5 category (X) axis labels (which is achieved).
I have 2 questions (refer attached image for more details),
1) These labels have to be properly rounded in near by hour or 30 minute
2) Tooltip has to be formatted in dd.MM.yy HH:tt
Data for this chart is received dynamically. I cannot use the category axis type as 'Date' as I wanted to show all data points on the graph.
My sample code is available below,
var dataSource=[{"precisionIndex":0,"subPrecisionIndex":0,"measurementDate":"2017-06-07T13:16:29.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-7.6000000000,"data_5":-3.0000000000},{"precisionIndex":800,"subPrecisionIndex":0,"measurementDate":"2017-06-07T13:16:29.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-7.6000000000,"data_5":-3.0000000000},{"precisionIndex":1,"subPrecisionIndex":0,"measurementDate":"2017-06-07T13:24:50.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.8000000000,"data_4":-7.8000000000,"data_5":-2.9000000000},{"precisionIndex":3,"subPrecisionIndex":0,"measurementDate":"2017-06-07T13:36:00.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.8000000000,"data_4":-7.4000000000,"data_5":-2.8000000000},{"precisionIndex":4,"subPrecisionIndex":0,"measurementDate":"2017-06-07T13:41:34.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.9000000000,"data_4":-7.5000000000,"data_5":-3.0000000000},{"precisionIndex":5,"subPrecisionIndex":0,"measurementDate":"2017-06-07T13:47:09.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-7.7000000000,"data_5":-3.1000000000},{"precisionIndex":6,"subPrecisionIndex":0,"measurementDate":"2017-06-07T13:52:44.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.6000000000,"data_4":-8.1000000000,"data_5":-3.1000000000},{"precisionIndex":7,"subPrecisionIndex":0,"measurementDate":"2017-06-07T13:58:18.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.6000000000,"data_4":-8.3000000000,"data_5":-3.3000000000},{"precisionIndex":8,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:03:53.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.6000000000,"data_4":-9.0000000000,"data_5":-3.3000000000},{"precisionIndex":9,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:09:28.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.8000000000,"data_4":-9.1000000000,"data_5":-3.5000000000},{"precisionIndex":10,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:15:02.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.8000000000,"data_4":-9.5000000000,"data_5":-3.8000000000},{"precisionIndex":11,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:20:37.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.6000000000,"data_4":-9.7000000000,"data_5":-3.7000000000},{"precisionIndex":12,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:26:12.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-9.9000000000,"data_5":-3.8000000000},{"precisionIndex":13,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:31:46.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.6000000000,"data_4":-10.2000000000,"data_5":-3.9000000000},{"precisionIndex":14,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:37:21.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.5000000000,"data_4":-10.6000000000,"data_5":-4.3000000000},{"precisionIndex":15,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:42:56.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-11.0000000000,"data_5":-4.5000000000},{"precisionIndex":16,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:48:30.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-11.4000000000,"data_5":-4.3000000000},{"precisionIndex":17,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:54:05.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.5000000000,"data_4":-11.8000000000,"data_5":-4.8000000000},{"precisionIndex":18,"subPrecisionIndex":0,"measurementDate":"2017-06-07T14:59:40.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-12.1000000000,"data_5":-5.1000000000},{"precisionIndex":24,"subPrecisionIndex":0,"measurementDate":"2017-06-07T15:33:07.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-12.3000000000,"data_5":-5.5000000000},{"precisionIndex":26,"subPrecisionIndex":0,"measurementDate":"2017-06-07T15:44:17.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-12.2000000000,"data_5":-5.7000000000},{"precisionIndex":27,"subPrecisionIndex":0,"measurementDate":"2017-06-07T15:49:51.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.6000000000,"data_4":-12.3000000000,"data_5":-5.7000000000},{"precisionIndex":28,"subPrecisionIndex":0,"measurementDate":"2017-06-07T15:55:26.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.7000000000,"data_4":-12.4000000000,"data_5":-5.8000000000},{"precisionIndex":29,"subPrecisionIndex":0,"measurementDate":"2017-06-07T16:01:01.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.5000000000,"data_4":-13.1000000000,"data_5":-5.9000000000},{"precisionIndex":30,"subPrecisionIndex":0,"measurementDate":"2017-06-07T16:06:35.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.5000000000,"data_4":-13.4000000000,"data_5":-6.3000000000},{"precisionIndex":31,"subPrecisionIndex":0,"measurementDate":"2017-06-07T16:12:10.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-21.9000000000,"data_4":-13.6000000000,"data_5":-6.7000000000},{"precisionIndex":32,"subPrecisionIndex":0,"measurementDate":"2017-06-07T16:17:45.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.0000000000,"data_4":-13.9000000000,"data_5":-6.9000000000},{"precisionIndex":33,"subPrecisionIndex":0,"measurementDate":"2017-06-07T16:23:19.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.1000000000,"data_4":-13.7000000000,"data_5":-7.4000000000},{"precisionIndex":34,"subPrecisionIndex":0,"measurementDate":"2017-06-07T16:28:54.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.1000000000,"data_4":-14.3000000000,"data_5":-7.9000000000},{"precisionIndex":35,"subPrecisionIndex":0,"measurementDate":"2017-06-07T16:34:29.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.3000000000,"data_4":-14.3000000000,"data_5":-8.0000000000},{"precisionIndex":36,"subPrecisionIndex":0,"measurementDate":"2017-06-07T16:40:03.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.3000000000,"data_4":-14.4000000000,"data_5":-8.4000000000},{"precisionIndex":37,"subPrecisionIndex":0,"measurementDate":"2017-06-07T16:45:38.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.4000000000,"data_4":-14.8000000000,"data_5":-8.4000000000},{"precisionIndex":38,"subPrecisionIndex":0,"measurementDate":"2017-06-07T16:51:13.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.4000000000,"data_4":-15.0000000000,"data_5":-9.0000000000},{"precisionIndex":39,"subPrecisionIndex":0,"measurementDate":"2017-06-07T16:56:47.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.2000000000,"data_4":-15.2000000000,"data_5":-9.3000000000},{"precisionIndex":40,"subPrecisionIndex":0,"measurementDate":"2017-06-07T17:02:22.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.4000000000,"data_4":-15.6000000000,"data_5":-9.6000000000},{"precisionIndex":41,"subPrecisionIndex":0,"measurementDate":"2017-06-07T17:07:57.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.5000000000,"data_4":-15.7000000000,"data_5":-10.0000000000},{"precisionIndex":42,"subPrecisionIndex":0,"measurementDate":"2017-06-07T17:13:31.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.6000000000,"data_4":-16.1000000000,"data_5":-10.6000000000},{"precisionIndex":43,"subPrecisionIndex":0,"measurementDate":"2017-06-07T17:19:06.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.5000000000,"data_4":-16.6000000000,"data_5":-11.5000000000},{"precisionIndex":44,"subPrecisionIndex":0,"measurementDate":"2017-06-07T17:24:40.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.8000000000,"data_4":-16.6000000000,"data_5":-11.7000000000},{"precisionIndex":45,"subPrecisionIndex":0,"measurementDate":"2017-06-07T17:30:15.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.7000000000,"data_4":-16.7000000000,"data_5":-11.8000000000},{"precisionIndex":46,"subPrecisionIndex":0,"measurementDate":"2017-06-07T17:35:50.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.7000000000,"data_4":-16.4000000000,"data_5":-12.0000000000},{"precisionIndex":47,"subPrecisionIndex":0,"measurementDate":"2017-06-07T17:41:24.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.7000000000,"data_4":-17.2000000000,"data_5":-12.5000000000},{"precisionIndex":48,"subPrecisionIndex":0,"measurementDate":"2017-06-07T17:46:59.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.9000000000,"data_4":-17.3000000000,"data_5":-12.6000000000},{"precisionIndex":50,"subPrecisionIndex":0,"measurementDate":"2017-06-07T17:58:08.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.8000000000,"data_4":-17.4000000000,"data_5":-13.0000000000},{"precisionIndex":52,"subPrecisionIndex":0,"measurementDate":"2017-06-07T18:09:18.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.7000000000,"data_4":-17.4000000000,"data_5":-12.9000000000},{"precisionIndex":53,"subPrecisionIndex":0,"measurementDate":"2017-06-07T18:14:52.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.7000000000,"data_4":-17.4000000000,"data_5":-13.0000000000},{"precisionIndex":55,"subPrecisionIndex":0,"measurementDate":"2017-06-07T18:26:02.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.7000000000,"data_4":-17.7000000000,"data_5":-13.1000000000},{"precisionIndex":57,"subPrecisionIndex":0,"measurementDate":"2017-06-07T18:37:11.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.8000000000,"data_4":-17.5000000000,"data_5":-13.1000000000},{"precisionIndex":59,"subPrecisionIndex":0,"measurementDate":"2017-06-07T18:48:20.4","data_1":22.0000000000,"data_2":-22.0000000000,"data_3":-22.7000000000,"data_4":-17.6000000000,"data_5":-13.0000000000}];
$("#chart").kendoChart({
dataSource: dataSource,
seriesDefaults: {
type: "line"
},
series: [
{
field: "data_3",
name: "Profit 2"
},
{
field: "data_4",
name: "Profit 1"
}],
categoryAxis: {
field: "measurementDate",
type:"category",
labels: {
template: function(e){
var val =new Date(e.value);
var label = kendo.toString(val, "dd.MM.yy HH:mm");
return label.split(" ").join("\n");
}
}
},
valueAxis: {
axisCrossingValue: Number.MIN_SAFE_INTEGER
},
tooltip: {
visible: true,
shared: true
},
dataBound: function (e) {
var ds = this.dataSource.data();
var maxDateCategories = 4;
var step = Math.round(ds.length / maxDateCategories);
// display only 'n'th categories on xAxis
this.options.categoryAxis.labels.step = step;
}
});
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Untitled</title>
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2017.2.621/styles/kendo.common.min.css">
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2017.2.621/styles/kendo.rtl.min.css">
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2017.2.621/styles/kendo.default.min.css">
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2017.2.621/styles/kendo.mobile.all.min.css">
<script src="https://code.jquery.com/jquery-1.12.3.min.js"></script>
<script src="https://kendo.cdn.telerik.com/2017.2.621/js/angular.min.js"></script>
<script src="https://kendo.cdn.telerik.com/2017.2.621/js/jszip.min.js"></script>
<script src="https://kendo.cdn.telerik.com/2017.2.621/js/kendo.all.min.js"></script></head>
<body>
<div id="chart"> </div>
</body>
</html>
For the Tooltip you can use the sharedTemplate to format the category as desired:
sharedTemplate: '<div> #= kendo.toString(new Date(category), "dd.MM.yy HH:mm") # </div># for (var i = 0; i < points.length; i++) { # <div>#: points[i].series.name# : #: points[i].value #</div># } #'
For the label template, add your own rounding logic for the timestamp, e.g.:
labels: {
template: function(e){
var val =new Date(e.value);
var mins = val.getMinutes();
if (mins < 15 ) {
val.setMinutes(0);
} else if (mins < 45) {
val.setMinutes(30);
} else {
val.setHours(val.getHours() + 1);
val.setMinutes(0);
}
var label = kendo.toString(val, "dd.MM.yy HH:mm");
return label.split(" ").join("\n");
}
}
DEMO

Not able to bind column data when there is space in json

<html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<title>OData Date Table Multiple Sorters</title>
<link rel="stylesheet" type="text/css" href="">
<script id="sap-ui-bootstrap" src="https://openui5.hana.ondemand.com/resources/sap-ui-core.js" type="text/javascript" data-sap-ui-libs="sap.ui.core,sap.ui.commons,sap.ui.table" data-sap-ui-theme="sap_goldreflection">
</script>
<script>
var airsideTableDataOriginal=
//{"genericTableModel":
[
{"columnId":"col1","WS":"WS 1","Status":0},
{"columnId":"col 2","WS":"WS 2","Status":1},
{"columnId":"col3","WS":"WS 3","Status":2},
{"columnId":"col4","WS":"WS 4","Status":3},
{"columnId":"col5","WS":"WS 5","Status":4},
];
var aColumnData = [{
columnId: "col1"
}, {
columnId: "col 2"
}, {
columnId: "col3"
}, {
columnId: "col4"
}, {
columnId: "col5"
}];
var aData = [{
"col 2": "WS 2",
col3: "WS 3",
col4: "WS 4",
col5: "WS 5"
}];
var oModel = new sap.ui.model.json.JSONModel();
oModel.setData({
columns: aColumnData,
rows: aData
});
var oTable = new sap.ui.table.Table({
title: "Table column and data binding",
showNoData : true,
columnHeaderHeight : 10,
visibleRowCount: 7
});
oTable.setModel(oModel);
oTable.bindColumns("/columns", function(index, context) {
var sColumnId = context.getObject().columnId;
var tempJson=airsideTableDataOriginal;
return new sap.ui.table.Column({
id : sColumnId,
label: sColumnId,
template: new sap.ui.commons.Button({
text : {
path: sColumnId,
formatter: function(value){
if(value!=null){
var specificJson= $.grep(tempJson, function( n, i ) {
return n.columnId === sColumnId.toString() && n.WS === value.toString();
});
if(specificJson[0].Status == 1){
this.setIcon("sap-icon://accept");
this.setStyle(sap.ui.commons.ButtonStyle.Accept);
}
}
if(value === "" || value == undefined){
this.setVisible(false);
}
return value ;
}
},
}),
sortProperty: sColumnId,
filterProperty: sColumnId
});
});
oTable.bindRows("/rows");
oTable.placeAt("content");
</script>
</head>
<body class="sapUiBody" id="body" role="application">
<div id="content"></div>
</body>
</html>
As per the above code there is space between col 2 which gives error "col 2" is not a valid ID.. Here is the bin. But when I replace col 2 with col2 it works fine. But in real time I get spaces in data so how to fix it so that it would work with spaces also.
I would guess, that the error comes from the invalid ID of the Column object: id : sColumnId, (the first line after return new sap.ui.table.Column({) and not from the binding.
Like Mark said in his comment Element IDs cannot contain spaces. But the ID is not visible to the User and you can just replace the spaces of the Column.id while assigning or you can skip the id assignment at all to get automaticaly generated ids.
A client who demands spaces in their ID's I would 1) definitely steer clear from, and if that's not possible, 2) educate them that their "requirement" is utter [...]
Nevertheless, I would simply replace the spaces with underscores (it's really simple Javascript):
airsideTableDataOriginal.forEach(function(obj) {
obj.columnId = obj.columnId.replace(/ /g,"_");
});
aColumnData.forEach(function(obj) {
obj.columnId = obj.columnId.replace(/ /g,"_");
});
aData.forEach(function(obj) {
for (var property in obj) {
if (obj.hasOwnProperty(property)) {
if (~property.indexOf(" ")) {
var newProperty = property.replace(/ /g,"_");
obj[newProperty] = obj[property];
delete obj[property];
}
}
}
});