I am able to following the Choropleth example of leaflet:
https://leafletjs.com/examples/choropleth/
Now, I want to add another overlay for another data, and with that I am also successful. My problem is on displaying or retrieving the data of the current active overlay, no matter what I did it is still showing the data of the 1st overlay even if I am selecting the 2nd overlay.
The "e" in the following example still displays the data of the 1st overlay:
function highlightFeature(e) {
Here is how I am adding the overlays:
var overlays = {
"PUI": PUIs,
"Confirmed": Confirmed
};
var options = {
position: 'bottomleft'
};
L.control.layers(baseLayers, overlays, options).addTo(map);
And here is how I am adding the layers:
geojson = L.geoJson(item, {
style: style,
onEachFeature: onEachFeature
}).addTo(PUIs);
I am not sure what I am missing, I tried using different "onEachFeature" for each overlay, and different functions for the different events but still it made no difference. What am I missing?
EDIT: With 1st overlay I meant the "PUIs", even if I uncheck it and select "Confirmed", when highlighting the map it is displaying the data for "PUIs" instead of the "Confirmed".
EDIT2: Here's the modified Choropleth example which shows the behaviour:
<!DOCTYPE html>
<html>
<head>
<title>Choropleth 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/[email protected]/dist/leaflet.css" integrity="sha512-xwE/Az9zrjBIphAcBb3F6JVqxf46+CDLwfLMHloNu6KEQCAWi6HcDUbeOfBIptF7tcCzusKFjFw2yuvEpDL9wQ==" crossorigin=""/>
<script src="https://unpkg.com/[email protected]/dist/leaflet.js" integrity="sha512-gZwIG9x3wUXg2hdXF6+rVkLF/0Vi9U8D2Ntg4Ga5I5BZpVkVxlJWbSQtXPSiUTtC0TjtGOmxa1AJPuV0CPthew==" crossorigin=""></script>
<style>
html, body {
height: 100%;
margin: 0;
}
#map {
width: 600px;
height: 400px;
}
</style>
<style>#map { width: 800px; height: 500px; }
.info { padding: 6px 8px; font: 14px/16px Arial, Helvetica, sans-serif; background: white; background: rgba(255,255,255,0.8); box-shadow: 0 0 15px rgba(0,0,0,0.2); border-radius: 5px; } .info h4 { margin: 0 0 5px; color: #777; }
.legend { text-align: left; line-height: 18px; color: #555; } .legend i { width: 18px; height: 18px; float: left; margin-right: 8px; opacity: 0.7; }</style>
</head>
<body>
<div id='map'></div>
<script src="https://code.jquery.com/jquery-3.4.1.js" integrity="sha256-WpOohJOqMqqyKL9FccASB9O0KwACQJpFTUBLTYOVvVU=" crossorigin="anonymous"></script>
<script src="assets/js/script.js"></script>
<script type="text/javascript" src="us-states.js"></script>
<script type="text/javascript">
var cities = L.layerGroup();
var cities2 = L.layerGroup();
var map = L.map('map').setView([37.8, -96], 4);
var xx = L.tileLayer('https://api.mapbox.com/styles/v1/{id}/tiles/{z}/{x}/{y}?access_token=pk.eyJ1IjoibWFwYm94IiwiYSI6ImNpejY4NXVycTA2emYycXBndHRqcmZ3N3gifQ.rJcFIG214AriISLbB6B5aw', {
maxZoom: 18,
attribution: 'Map data © <a href="https://www.openstreetmap.org/">OpenStreetMap</a> contributors, ' +
'<a href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, ' +
'Imagery © <a href="https://www.mapbox.com/">Mapbox</a>',
id: 'mapbox/light-v9',
tileSize: 512,
zoomOffset: -1
}).addTo(map);
// control that shows state info on hover
var info = L.control();
info.onAdd = function (map) {
this._div = L.DomUtil.create('div', 'info');
this.update();
return this._div;
};
info.update = function (props) {
this._div.innerHTML = '<h4>US Population Density</h4>' + (props ?
'<b>' + props.name + '</b><br />' + props.density + ' people / mi<sup>2</sup>'
: 'Hover over a state');
};
info.addTo(map);
// get color depending on population density value
function getColor(d) {
return d > 1000 ? '#800026' :
d > 500 ? '#BD0026' :
d > 200 ? '#E31A1C' :
d > 100 ? '#FC4E2A' :
d > 50 ? '#FD8D3C' :
d > 20 ? '#FEB24C' :
d > 10 ? '#FED976' :
'#FFEDA0';
}
function style(feature) {
return {
weight: 2,
opacity: 1,
color: 'white',
dashArray: '3',
fillOpacity: 0.7,
fillColor: getColor(feature.properties.density)
};
}
function highlightFeature(e) {
var layer = e.target;
layer.setStyle({
weight: 5,
color: '#666',
dashArray: '',
fillOpacity: 0.7
});
if (!L.Browser.ie && !L.Browser.opera && !L.Browser.edge) {
layer.bringToFront();
}
info.update(layer.feature.properties);
}
var geojson;
function resetHighlight(e) {
geojson.resetStyle(e.target);
info.update();
}
function zoomToFeature(e) {
map.fitBounds(e.target.getBounds());
}
function onEachFeature(feature, layer) {
layer.on({
mouseover: highlightFeature,
mouseout: resetHighlight,
click: zoomToFeature
});
}
geojson = L.geoJson(statesData, {
style: style,
onEachFeature: onEachFeature
}).addTo(cities);
cities.addTo(map);
var states2 = statesData;
$.each(states2.features, function (index, item) {
item.properties.density = 11;
geojson = L.geoJson(item, {
style: style,
onEachFeature: onEachFeature
}).addTo(cities2);
});
map.attributionControl.addAttribution('Population data © <a href="http://census.gov/">US Census Bureau</a>');
var legend = L.control({position: 'bottomright'});
legend.onAdd = function (map) {
var div = L.DomUtil.create('div', 'info legend'),
grades = [0, 10, 20, 50, 100, 200, 500, 1000],
labels = [],
from, to;
for (var i = 0; i < grades.length; i++) {
from = grades[i];
to = grades[i + 1];
labels.push(
'<i style="background:' + getColor(from + 1) + '"></i> ' +
from + (to ? '–' + to : '+'));
}
div.innerHTML = labels.join('<br>');
return div;
};
legend.addTo(map);
var baseLayers = {
"Grayscale": xx
};
var overlays = {
"Cities": cities,
"Cities2": cities2
};
L.control.layers(baseLayers, overlays).addTo(map);
</script>
</body>
</html>
Hovering over the cities will just display "11" which is the density of the 2nd overlay, and will reset according to the style of the 2nd overlay.
