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Addition and removal of cesium geojson data

2022-07-19 05:13:00 【Wxy4Z1zzz】

1、 Definition GeoJson： First define GeoJsonDataSource, load GeoJson.

 2、 add to GeoJson： Will define GeoJson Add to viewer Of dataSources in .

Pay attention here ：

  （1） Defined GeoJson Assign a name, Default name by undefined.name It can be English or Chinese , But we must ensure uniqueness .

  （2） Use then Method , Direct to GeoJson Definition name It will lead to a conflict with GeoJson Self contained name No correspondence . 

3、 remove GeoJson： according to GeoJson Of name Field , To determine which one on the map scene to remove GeoJson data .

4、 If you want to remove all , Use it directly removeAll.

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