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                **如何判斷地圖標注是否為空** 地圖標注控件可實現地址的定位選擇,目前計算公式中不支持地圖標注控件的計算和判斷。當需要通過公式來判斷地圖標注控件是否為空時,實現步驟如下: 步驟一:增加文本控件(例如:地址),通過設置關聯對象為地圖標注控件,獲取地址。(見圖一) 步驟二:在計算公式中判斷新增的文本控件是否為空。 ![](http://mall.seeyon.com/ueditor/php/upload/image/20181109/1541732107192998.png) 圖一
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