var a=下拉列表参数1.getSelectedObjects()
var b=下拉列表参数1.getObjects()
if(a.length !=b.length){
//不全选时,隐藏列
var loc = new Locator(["省份", COL, DETAIL);
图表1.setColWidth(loc,0);//0为像素
}
else{
//全选时
var loc = new Locator(["省份", COL, DETAIL);
图表1.setColWidth(loc,200);//200为像素
}