Change geojson layer style without reloading it

CesiumJS
1

**May I know if it’s possible to dynamically change the style of geojson layer after layer loaded? **

Currently, I need to call GeojsonDataSource.Load(url, { style-options }) to update the style, is there’s a way to update color without reloading?

Thanks!

2

One way is to iterate over the entities that were created by GeoJsonDataSource.load(). Here’s an example that changes the color of the billboard associated with a point feature after 5 seconds.

var viewer = new Cesium.Viewer(‘cesiumContainer’, {

sceneMode : Cesium.SceneMode.SCENE2D,

timeline : false,

animation : false

});

var myDataSource;

viewer.dataSources.add(Cesium.GeoJsonDataSource.load(’…/…/SampleData/SAR_point.geojson’)).then(function(ds) {

viewer.zoomTo(ds);

myDataSource = ds;

setTimeout(function() {

    var entities = myDataSource.entities.values;

    for (var i = 0; i < entities.length; i++) {

        var entity = entities[i];

        entity.billboard.color = Cesium.Color.RED;

    }

}, 5000);

});

``

Hope that helps.

Scott