〖轨道〗穿上轨选股公式

N:=11;M:=6;
 CV:=CLOSE;
 BBIBOLL:=(MA(CV,3)+MA(CV,6)+MA(CV,12)+MA(CV,24))/4;
 UPR:=BBIBOLL+M*STD(BBIBOLL,N);
 DWN:=BBIBOLL-M*STD(BBIBOLL,N);
 CROSS(C,UPR) OR CROSS(H,UPR);