I need to get popups showing for just a single feature layer (forest -- stored as a GeoJSON) as opposed to all in Openlayers. I currently have the below.
var map = new ol.Map({
target: "map",
layers: [
new ol.layer.Tile({
source: new ol.source.OSM()
}),
new ol.layer.Vector({
renderMode: 'image',
style: forestStyle,
source: new ol.source.Vector({
url: '../data/forests.geojson',
format: new ol.format.GeoJSON()
})
})
]
});
How do I go about this, please?
PS: I am using Bootstrap 3 and could do with solutions built around it too.
EDIT (After Mike's response)
{
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"id": 1,
"geometry": {
"type": "Polygon",
"coordinates": [
[
[
22.9629863189914,
40.8240755346776
],
[
22.9692602042389,
40.8166598348136
],
[
22.9690134736772,
40.8169316800029
],
[
22.9687847485475,
40.81713616158
],
[
22.9682455495031,
40.8176072482245
],
[
22.9679709332253,
40.81774367484
],
[
22.9673630702601,
40.8179212679431
],
[
22.967084992837,
40.8182602865605
],
[
22.9667116917971,
40.8188278348423
],
[
22.9664306019971,
40.8193063705868
],
[
22.9663027287322,
40.8196696271834
],
[
22.9661765887141,
40.8199428509784
],
[
22.9648132221368,
40.8217371937712
],
[
22.9632330867235,
40.8238037050033
],
[
22.9629863189914,
40.8240755346776
]
]
]
},
"properties": {
"FID": 1,
"OBJECTID": 119,
"ID": "GR-4291",
"Code_12": "131",
"Remark": " ",
"Area_ha": 95.6086248776,
"Shape_Leng": 6533.9468799,
"code00": 13,
"Shape_Le_1": 6533.9468799,
"Shape_Area": 956086.248776,
}
}
]
}
`
// Above is the JSON
var forest = new ol.layer.Vector({
renderMode: 'image',
style: forestStyle,
source: new ol.source.Vector({
url: '../data/forests.geojson',
format: new ol.format.GeoJSON()
})
})
var element = document.getElementById('popup');
var popup = new ol.Overlay({
element: element,
positioning: 'bottom-center',
stopEvent: false,
offset: [0, -50]
});
map.addOverlay(popup);
map.on('click', function(evt) {
var feature = map.forEachFeatureAtPixel(evt.pixel,
function(feature) {
return feature;
},
{ layerFilter: function(candidate) {
return (candidate === forest)
}
});
if (feature) {
var coordinates = feature.getGeometry().getCoordinates();
console.log(coordinates);
popup.setPosition(coordinates);
$(element).popover({
'placement': 'top',
'html': true,
'content': feature.get('id')
});
$(element).popover('show');
} else {
$(element).popover('destroy');
}
});