how to remove an entity from datasource

CesiumJS
1

I loaded a geojson file via datasource.And entity type was billboard.I want to remove an entity.billboard,but don't know how to do it.

2

An entity has loads of sub fields. model, label, billboard and so on.
Not sure if it is of type billboard?

In case you want to remove the whole entity:

var streamingczml = new Cesium.CzmlDataSource();
var mamessag = JSON.parse(czmlUpdate.data);

streamingczml.entities.removeById(mamessag[1].id);

billboard has a show switch
https://cesiumjs.org/Cesium/Build/Documentation/BillboardGraphics.html

Not sure how you just remove a label/billboard. They are "null" though
before they are added So maybe setting them to null works.

3

https://cesiumjs.org/Cesium/Build/Documentation/BillboardCollection.html

BillBoardCollection has a

remove(billboard) → Boolean

4

You should be able to do that with code like the following:

Cesium.GeoJsonDataSource.load(’/my/geoJSON.geojson’, geojsonOptions).then(function (dataSource) {

viewer.dataSources.add(dataSource);

var entities = dataSource.entities.values;

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

var entity = entities[i];

if (Cesium.defined(entity.billboard)) {

entity.billboard = undefined;

// or

entities.remove(entity);

}

}

});

``

For more details on managing entities, see the Cesium Visualizing Spatial Data tutorial.

Thanks,

Gabby