I've a map rapresentation, I want to add a layer based on a GEOJSON, but I don't want to read it directly from a GEOJSON file, instead I've a variable that contain the exact string of GEOJSON that I require, is possible to load it from a variable instead of an url?
var map = new ol.Map({
target: 'map',
layers: [
new ol.layer.Tile({
source: new ol.source.OSM()
}),
new ol.layer.Vector({
title: 'bikesRented',
source: new ol.source.Vector({
url: !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
format: new ol.format.GeoJSON()
}),
style: bikeStyle2
})
],
view: new ol.View({
center: ol.proj.fromLonLat([11.341868,44.494949]),
zoom: 14
})
});
You could read the features from your string and add them to the source
var source = new ol.source.Vector();
var map = new ol.Map({
target: 'map',
layers: [
new ol.layer.Tile({
source: new ol.source.OSM()
}),
new ol.layer.Vector({
title: 'bikesRented',
source: source,
style: bikeStyle2
})
],
view: new ol.View({
center: ol.proj.fromLonLat([11.341868,44.494949]),
zoom: 14
})
});
source.addFeatures(
new ol.format.GeoJSON().readFeatures(geojsonstring, {
dataProjection: 'EPSG:4326',
featureProjection: map.getView().getProjection()
})
);
or you could use a data url and let OpenLayers load that
var map = new ol.Map({
target: 'map',
layers: [
new ol.layer.Tile({
source: new ol.source.OSM()
}),
new ol.layer.Vector({
title: 'bikesRented',
source: new ol.source.Vector({
url: 'data:,' + encodeURIComponent(geojsonstring),
format: new ol.format.GeoJSON()
}),
style: bikeStyle2
})
],
view: new ol.View({
center: ol.proj.fromLonLat([11.341868,44.494949]),
zoom: 14
})
});