I have seen over the internet a lot of examples of using Features paste them into the Vector layer and after that insert the layer to the map .
basic example:
<script>
var iconFeature = new ol.Feature({
geometry: new ol.geom.Point([0, 0]),
name: 'Null Island',
population: 4000,
rainfall: 500
});
var iconStyle = new ol.style.Style({
image: new ol.style.Icon(/** @type {olx.style.IconOptions} */ ({
anchor: [0.5, 46],
anchorXUnits: 'fraction',
anchorYUnits: 'pixels',
opacity: 0.75,
src: 'data/icon.png'
}))
});
iconFeature.setStyle(iconStyle);
var vectorSource = new ol.source.Vector({
features: [iconFeature]
});
var vectorLayer = new ol.layer.Vector({
source: vectorSource
});
var rasterLayer = new ol.layer.Tile({
source: new ol.source.TileJSON({
url: 'http://api.tiles.mapbox.com/v3/mapbox.geography-class.jsonp',
crossOrigin: ''
})
});
var map = new ol.Map({
layers: [rasterLayer, vectorLayer],
target: document.getElementById('map'),
view: new ol.View({
center: [0, 0],
zoom: 3
})
});
In all of those examples they Feature created and put into Vector layer before we create the map but if I want in real time to add some Features.. after I created the map ? how can I do it ?
Best Answer
You can add features to the source after the layer is added to the map. See the API