when you mouse over a cluster, Leaflet.markercluster should show the bounds of its markers. this is the (simplified) code I am using:
map = new L.Map('map');
L.tileLayer(
'https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
maxZoom: 13,
attribution: 'Map data © OpenStreetMap contributors'
}
).addTo(map);
map.setView([51.505, -0.09], 11);
let deflate_features = L.deflate({
minSize: 40,
markerCluster: true
});
deflate_features.addTo(map);
var polygon = L.polygon([
[51.509, -0.08],
[51.503, -0.06],
[51.51, -0.047]
]);
deflate_features.addLayer(polygon);
var polyline = L.polyline([
[51.52, -0.05],
[51.53, -0.10],
], {
color: 'red'
});
deflate_features.addLayer(polyline);
#map {position: absolute; top: 0; bottom: 0; left: 0; right: 0;}
<html>
<head>
<link href="https://unpkg.com/leaflet#1.3.3/dist/leaflet.css" rel="stylesheet" />
<link href="https://unpkg.com/leaflet.markercluster#1.3.0/dist/MarkerCluster.css" rel="stylesheet" />
<link href="https://unpkg.com/leaflet.markercluster#1.3.0/dist/MarkerCluster.Default.css" rel="stylesheet" />
<script src="https://unpkg.com/leaflet#1.3.3/dist/leaflet.js"></script>
<script src="https://unpkg.com/leaflet.markercluster#1.3.0/dist/leaflet.markercluster.js"></script>
<script src="https://unpkg.com/Leaflet.Deflate#1.0.0-alpha.2/dist/L.Deflate.js"></script>
</head>
<body>
<div id="map"></div>
</body>
</html>
why does the cluster coverage on hover not show?
coverage is not shown if there are only 2 objects... :|
adding a third object, e.g.:
var polyline2 = L.polyline([
[51.535, -0.1],
[51.525, -0.05],
], {
color: 'green'
});
deflate_features.addLayer(polyline2);
enables cluster coverage:
Related
I'm just trying to do a simple map using the Leaflet.js libraries directly instead of the python wrappers(ipyleaflet, folium) but I can't any map to display regardless of what I do. the map area is drawn the correct size with the zoom controls, as are the tile attributions, and a marker in the right location. I have tried multiple browsers and also in QWebEngineView as well as different tile sets. I've also tried both the hosted js and css scripts as well as local copies The results are the same. Everything with the same v1.7.1 release though.
Here is the html code:
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta charset="utf-8" />
<title></title>
<link rel="stylesheet" href="leaflet.css" />
<script src="leaflet.js"></script>
<!-- <link rel="stylesheet" href="https://unpkg.com/leaflet#1.7.1/dist/leaflet.css" integrity="sha512-xodZBNTC5n17Xt2atTPuE1HxjVMSvLVW9ocqUKLsCC5CXdbqCmblAshOMAS6/keqq/sMZMZ19scR4PsZChSR7A==" crossorigin="" />
<script src="https://unpkg.com/leaflet#1.7.1/dist/leaflet.js" integrity="sha512-XQoYMqMTK8LvdxXYG3nZ448hOEQiglfqkJs1NOQV44cWnUrBc8PkAOcXy20w0vlaXaVUearIOBhiXZ5V3ynxwA==" crossorigin=""></script>
-->
<style>
#map {
width: 900px;
height: 400px;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
var layer = L.tileLayer('https://api.mapbox.com/styles/v1/{id}/tiles/{z}/{x}/{y}?access_token={accessToken}', {
attribution: 'Map data © OpenStreetMap contributors, Imagery © Mapbox',
maxZoom: 18,
id: 'mapbox/satellite-v9',
tileSize: 512,
zoomOffset: -1,
accessToken: 'your.mapbox.access.token'
});
var mymap = L.map('map', { preferCanvas: true, center: [43.08695, -73.75792], layers: [layer], zoom: 10 });
var mymarker = L.marker([43.08695, -73.75792], { draggable: true }).addTo(mymap)
</script>
</body>
</html
Here's a screenshot
Anybody got any ideas? This ought to be something really simple...
In https://leafletjs.com/examples/layers-control/example.html there are two layers - Grayscale and Streets. It defaults to Grayscale but how would one change the default to Streets instead?
In that example there's this:
var map = L.map('map', {
center: [39.73, -104.99],
zoom: 10,
layers: [grayscale, cities]
});
I tried swapping the order of the variables in layers but that didn't do anything.
There's also this:
var baseLayers = {
"Grayscale": grayscale,
"Streets": streets
};
I tried reversing that, as well, without success.
I even tried renaming the names of the layers, thinking that it might be done alphabetically, but no such luck.
Any ideas?
It has to do with which layer has been added to the map. So remove the array layers from the map instance and add streets layer to the map. That will define the preselected layer.
<!DOCTYPE html>
<html>
<head>
<title>Layers Control Tutorial - Leaflet</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="shortcut icon" type="image/x-icon" href="docs/images/favicon.ico" />
<link rel="stylesheet" href="https://unpkg.com/leaflet#1.7.1/dist/leaflet.css" integrity="sha512-xodZBNTC5n17Xt2atTPuE1HxjVMSvLVW9ocqUKLsCC5CXdbqCmblAshOMAS6/keqq/sMZMZ19scR4PsZChSR7A==" crossorigin="" />
<script src="https://unpkg.com/leaflet#1.7.1/dist/leaflet.js" integrity="sha512-XQoYMqMTK8LvdxXYG3nZ448hOEQiglfqkJs1NOQV44cWnUrBc8PkAOcXy20w0vlaXaVUearIOBhiXZ5V3ynxwA==" crossorigin=""></script>
<style>
html,
body {
height: 100%;
margin: 0;
}
#map {
width: 600px;
height: 400px;
}
</style>
</head>
<body>
<div id='map'></div>
<script>
var cities = L.layerGroup();
L.marker([39.61, -105.02]).bindPopup('This is Littleton, CO.').addTo(cities),
L.marker([39.74, -104.99]).bindPopup('This is Denver, CO.').addTo(cities),
L.marker([39.73, -104.8]).bindPopup('This is Aurora, CO.').addTo(cities),
L.marker([39.77, -105.23]).bindPopup('This is Golden, CO.').addTo(cities);
var mbAttr = 'Map data © OpenStreetMap contributors, ' +
'Imagery © Mapbox',
mbUrl = 'https://api.mapbox.com/styles/v1/{id}/tiles/{z}/{x}/{y}?access_token=pk.eyJ1IjoibWFwYm94IiwiYSI6ImNpejY4NXVycTA2emYycXBndHRqcmZ3N3gifQ.rJcFIG214AriISLbB6B5aw';
var map = L.map('map', {
center: [39.73, -104.99],
zoom: 10,
});
var grayscale = L.tileLayer(mbUrl, {
id: 'mapbox/light-v9',
tileSize: 512,
zoomOffset: -1,
attribution: mbAttr
});
var streets = L.tileLayer(mbUrl, {
id: 'mapbox/streets-v11',
tileSize: 512,
zoomOffset: -1,
attribution: mbAttr
}).addTo(map)
var baseLayers = {
"Streets": streets,
"Grayscale": grayscale
};
var overlays = {
"Cities": cities
};
L.control.layers(baseLayers, overlays).addTo(map);
</script>
</body>
</html>
What am I doing wrong? The intent is to have a few (say 6) leafletjs panes, each containing many markers and polylines, so the panes can be hidden independently. Here is a simplified program showing just two lines and markers in jsfiddle. The problem is, the polylines all get grouped in the same SVG and all get hidden together. Each pane in the example should show one polyline and one marker.
I don't want to remove the polylines from the map to hide them, then recreating them would not perform well.
If needed, the polylines could be drawn using D3 on top of the leaflet map but I was hoping it could all be done in leaflet.
Thanks!
JS:
'use strict';
document.addEventListener("DOMContentLoaded", function(event) {
var map = L.map('map').setView([30.5, -0.09], 2);
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: '© OpenStreetMap contributors'
}).addTo(map);
var pane1 = map.createPane('pane1');
var pane2 = map.createPane('pane2');
function hide(pane) {
pane.style.display = 'none';
}
function show(pane) {
pane.style.display = '';
}
let icon = new L.Icon.Default();
function dr(pane, latlng){
L.polyline([[45.421, -75.697], latlng], {
weight: 2,
pane: pane
}).addTo(map);
L.marker(latlng, {
icon: icon,
pane: pane
}).addTo(map);
}
// define two locations with lines from Ottawa
dr(pane1, [ 42.3732216, -72.5198537 ]);
dr(pane2, [ 35.9606384, -83.9207392 ]);
function sleep(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
async function loop(){
for( var i = 0; i<100; i++){
hide(pane1);
show(pane2);
await sleep(1000);
hide(pane2);
show(pane1);
await sleep(1000);
}
}
loop();});
HTML:
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://unpkg.com/leaflet#1.5.1/dist/leaflet.css" integrity="sha512-xwE/Az9zrjBIphAcBb3F6JVqxf46+CDLwfLMHloNu6KEQCAWi6HcDUbeOfBIptF7tcCzusKFjFw2yuvEpDL9wQ==" crossorigin=""/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.6.0/leaflet-src.js" integrity="sha256-wc8X54qvAHZGQY6nFv24TKlc3wtO0bgAfqj8AutTIu0=" crossorigin="anonymous"></script>
<style>
html, body {
height: 100%;
margin: 0;
}
#map {
width: 900px;
height: 500px;
}
</style>
</head>
<body>
<div id='map'></div>
</body>
</html>
<script src="c.js"></script>
I am using leaflet for the first time as I am using open street map in place for Google.
In google autocomplete we use to get address's Suburb via
var place = autocomplete.getPlace();
Can anyone help me in leafletJs to get address details.
Thanks Much in advance.
For autocomplete address in leaflet JS you can use its plugin. Here Code uses the ESRI geoserach plugin.
you can refer this link for more detail.
DEMO
var map = L.map('map').setView([40.91, -96.63], 4);
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: '© OpenStreetMap contributors'
}).addTo(map);
var searchControl = L.esri.Geocoding.geosearch().addTo(map);
var results = L.layerGroup().addTo(map);
searchControl.on('results', function(data) {
results.clearLayers();
for (var i = data.results.length - 1; i >= 0; i--) {
results.addLayer(L.marker(data.results[i].latlng));
}
});
body {
margin: 0;
padding: 0;
}
#map {
position: absolute;
top: 0;
bottom: 0;
right: 0;
left: 0;
}
<!-- Load Leaflet from CDN -->
<link rel="stylesheet" href="https://unpkg.com/leaflet#1.3.1/dist/leaflet.css" integrity="sha512-Rksm5RenBEKSKFjgI3a41vrjkw4EVPlJ3+OiI65vTjIdo9brlAacEuKOiQ5OFh7cOI1bkDwLqdLw3Zg0cRJAAQ==" crossorigin="" />
<script src="https://unpkg.com/leaflet#1.3.1/dist/leaflet.js" integrity="sha512-/Nsx9X4HebavoBvEBuyp3I7od5tA0UzAxs+j83KgC8PU0kgB4XiK4Lfe4y4cgBtaRJQEIFCW+oC506aPT2L1zw==" crossorigin=""></script>
<!-- Load Esri Leaflet from CDN -->
<script src="https://unpkg.com/esri-leaflet#2.1.4/dist/esri-leaflet.js" integrity="sha512-m+BZ3OSlzGdYLqUBZt3u6eA0sH+Txdmq7cqA1u8/B2aTXviGMMLOfrKyiIW7181jbzZAY0u+3jWoiL61iLcTKQ==" crossorigin=""></script>
<!-- Load Esri Leaflet Geocoder from CDN -->
<link rel="stylesheet" href="https://unpkg.com/esri-leaflet-geocoder#2.2.9/dist/esri-leaflet-geocoder.css" integrity="sha512-v5YmWLm8KqAAmg5808pETiccEohtt8rPVMGQ1jA6jqkWVydV5Cuz3nJ9fQ7ittSxvuqsvI9RSGfVoKPaAJZ/AQ==" crossorigin="">
<script src="https://unpkg.com/esri-leaflet-geocoder#2.2.9/dist/esri-leaflet-geocoder.js" integrity="sha512-QXchymy6PyEfYFQeOUuoz5pH5q9ng0eewZN8Sv0wvxq3ZhujTGF4eS/ySpnl6YfTQRWmA2Nn3Bezi9xuF8yNiw==" crossorigin=""></script>
<div id="map"></div>
Using the geocoding control to search for addresses and center the map.
var map = L.map('map').setView([-28.4792625, 24.6727135], 4);
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: '© OpenStreetMap contributors'
}).addTo(map);
var searchControl = L.esri.Geocoding.geosearch().addTo(map);
var results = L.layerGroup().addTo(map);
searchControl.on('results', function (data) {
results.clearLayers();
for (var i = data.results.length - 1; i >= 0; i--) {
results.addLayer(L.marker(data.results[i].latlng));
}
});
body { margin:0; padding:0; }
#map { position: absolute; top:0; bottom:0; right:0; left:0; }
<html>
<head>
<meta charset="utf-8" />
<title>Geocoding Control</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
<!-- Load Leaflet from CDN -->
<link rel="stylesheet" href="https://unpkg.com/leaflet#1.6.0/dist/leaflet.css"
integrity="sha512-xwE/Az9zrjBIphAcBb3F6JVqxf46+CDLwfLMHloNu6KEQCAWi6HcDUbeOfBIptF7tcCzusKFjFw2yuvEpDL9wQ=="
crossorigin=""/>
<script src="https://unpkg.com/leaflet#1.6.0/dist/leaflet.js"
integrity="sha512-gZwIG9x3wUXg2hdXF6+rVkLF/0Vi9U8D2Ntg4Ga5I5BZpVkVxlJWbSQtXPSiUTtC0TjtGOmxa1AJPuV0CPthew=="
crossorigin=""></script>
<!-- Load Esri Leaflet from CDN -->
<script src="https://unpkg.com/esri-leaflet#2.4.1/dist/esri-leaflet.js"
integrity="sha512-xY2smLIHKirD03vHKDJ2u4pqeHA7OQZZ27EjtqmuhDguxiUvdsOuXMwkg16PQrm9cgTmXtoxA6kwr8KBy3cdcw=="
crossorigin=""></script>
<!-- Load Esri Leaflet Geocoder from CDN -->
<link rel="stylesheet" href="https://unpkg.com/esri-leaflet-geocoder#2.3.3/dist/esri-leaflet-geocoder.css"
integrity="sha512-IM3Hs+feyi40yZhDH6kV8vQMg4Fh20s9OzInIIAc4nx7aMYMfo+IenRUekoYsHZqGkREUgx0VvlEsgm7nCDW9g=="
crossorigin="">
<script src="https://unpkg.com/esri-leaflet-geocoder#2.3.3/dist/esri-leaflet-geocoder.js"
integrity="sha512-HrFUyCEtIpxZloTgEKKMq4RFYhxjJkCiF5sDxuAokklOeZ68U2NPfh4MFtyIVWlsKtVbK5GD2/JzFyAfvT5ejA=="
crossorigin=""></script>
</head>
<body>
<div id="map"></div>
</body>
</html>
Source: http://esri.github.io/esri-leaflet/examples/geocoding-control.html
I built a heatmap on Leaflet.
My first goal is to see the heatmap when you open the map. The second goal is not to view the heatmap if the zoom level is greater than 9.
I tried this :
if (map.getZoom() >9 {
map.removeLayer (heatmapLayer);
};
But it did not work.
Would you have any suggestions ?
Thanks !
Here is the code :
<!DOCTYPE html>
<html lang="en">
<head>
<title>Application - version 1.0</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="">
<meta name="author" content="">
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.6.3/leaflet.css" />
<link rel="stylesheet" href="style_p.css" />
<style type="text/css">
html, body, #map {
margin: 0;
margin-top: 0%;
width: 100%;
height: 100%;
};
</style>
</head>
<!-- Favicon -->
<link rel="icon" href="california.ico" />
<body>
<div id="map"></div>
<script src="http://cdn.leafletjs.com/leaflet-0.6.3/leaflet-src.js"></script>
<script src="http://maps.google.com/maps/api/js?v=3.2&sensor=false"></script>
<script src="jquery.js"></script>
<script type="text/javascript" src="heatmap.js"></script>
<script type="text/javascript" src="heatmap-leaflet.js"></script>
<script type="text/javascript" src="sloopjohnb.js"></script>
<script src="google.js"></script>
<script src="leaflet_search.js"></script>
<script type="text/javascript" charset="utf-8">
$(function() {
var osm = new L.TileLayer('http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png');
var base = new L.TileLayer('http://129.206.74.245:8001/tms_r.ashx?x={x}&y={y}&z={z}');
var ggl2 = new L.Google('SATELLITE');
var heatmapLayer;
heatmapLayer = L.TileLayer.heatMap({
radius: 10,
opacity: 0.8,
gradient: {
0.45: "rgb(0,0,255)",
0.55: "rgb(0,255,255)",
0.65: "rgb(0,255,0)",
0.95: "yellow",
1.0: "rgb(255,0,0)"
}
});
var Data1={
max: 1,
data: sloopjohnb
};
heatmapLayer.addData(Data1.data);
var baseMaps = {
"Fond OSM": osm,
"Fond de carte de base": base,
"Photo. aérienne Google" : ggl2
};
var overlayMaps = {
'Heatmap': heatmapLayer
};
map = new L.Map('map', {
minZoom : 1,
maxZoom : 11,
boxZoom : true,
layers: [base, heatmapLayer]
});
var controls = L.control.layers(baseMaps, overlayMaps, {position: 'bottomright'});
controls.addTo(map);
map.addControl(L.control.search());
L.control.scale().addTo(map);
map.attributionControl.addAttribution('Heatmap.js');
map.setView(new L.LatLng(39.291,-5.9765),2);
// Disparition de la heatmap en fct du zoom
map.on('zoomend', function () {
if (map.getZoom() > 9) {
map.removeLayer(heatmapLayer);
}
});
});
</script>
</body>
</html>
Are you sure you are creating the listener correctly?
For example, this seems like it should be called when the user zooms. So something like:
Edited
map.on('zoomend', function () {
if (map.getZoom() > 9 && map.hasLayer(heatmapLayer)) {
map.removeLayer(heatmapLayer);
}
if (map.getZoom() < 9 && map.hasLayer(heatmapLayer) == false)
{
map.addLayer(heatmapLayer);
}
});
If you ONLY want the layer added/removed based on zoom, don't add it to your layer control here:
var controls = L.control.layers(baseMaps, overlayMaps, {position: 'bottomright'});
controls.addTo(map);
You will just have to make sure you are doing your adding/removing when it is necessary. Try messing with this set up a little and see where you get. Also, the Documentation is well written regarding the use of L.tileLayer
You can use the leaflet-zoom-show-hide library to do it. This will automatically show/hide your layers as you zoom.
zsh = new ZoomShowHide(map);
var marker1 = L.marker([50.096, 14.425]);
// minzoom, maxzoom
zsh.addLayer(marker1, 10, 13);
var marker2 = L.marker([50.076, 14.425]);
zsh.addLayer(marker2, 8, null);