nitMap();
      initMapv();

      function initMap() {
        var center = Cesium.Cartesian3.fromDegrees(106.553587, 29.57837677, 50000.0);
        map.scene.camera.setView({
            destination: center,
        });
      }

      function initMapv() {
        $.get("./static/data/mapv/car.csv", function(csvstr) {
          // 设置对应的参数
          // https://github.com/huiyan-fe/mapv/blob/master/API.md
          var options = {
            context: "2d", //cesium必须设置画布为2d
    