>
objpie.adddata("北京",50,"北京的人口");
objpie.adddata("上海",52,"上海的固定人口");
objpie.adddata("天津",30,"天津的外地人口");
 
>
objpie.adddata("北京",50,"北京的人口");
objpie.adddata("上海",52,"上海的固定人口");
objpie.adddata("天津",30,"天津的外地人口");