     var geojson;

        initMap();
        loadData();

        function initMap() {
            webGlobe = new Cesium.WebSceneControl('GlobeView', {
                terrainExaggeration: 1,
            });
            //显示鼠标位置控件
            webGlobe.showPosition('coordinate_location');
            map = webGlobe.viewer;

            //构造第三方图层对象
            var thirdPartyLayer = new CesiumZondy.Layer.ThirdPartyLayer({
                viewer: webGlobe.viewer
            })