if(param["AorB"]=="A" ){
arr=["A1","A2"
Line_1.binding.clearYCols();
for(i=0;i<2;i++){
var colname=arr[i;
var bcol=new BCol(colname,DOUBLE,false);B
var mcol=new ChartMeasureCol(SUM,bcol,null);
Line_1.binding.addYCol(i,mcol);
}
} else if (param["AorB"]=="B"){B
Line_1.binding.clearYCols();
var bcol1=new BCol("B1",DOUBLE,false);
var mcol1=new ChartMeasureCol(SUM,bcol1,null);
Line_1.binding.addYCol(i,mcol1);
Line_1.legends.position=BOTTOM;//未生效