= earth;
                this._model = model1;

                // only for debug
                window.earth = earth;
                window.model = model1;
            },
            filters: {
                numFilter(value) {
                    // 截取当前数据到小数点后两位
                    let realVal = parseFloat(value).toFixed(5)
                    return realVal
                },
                numFilter2(value) {
                    // 截取当前数据到小数点后两位
 