通达信如何在中实现均线指标变换
以下是大智慧的公式，实现切换日线和周线周期时，K线图的指标也跟着变化，在通达信中如何实现？
谢了
IF datatype=8 then begin
MA(C,13),colorred;
MA(C,34),colorgreen;
MA(C,55),colorblue;
{MA(C,89),DOTLINE;
MA(C,133),DOTLINE;}
N:=IF(PERIOD=4,3,IF(PERIOD=5,13,DRAWNULL));
M:=IF(PERIOD=4,8,IF(PERIOD=5,34,DRAWNULL));
K:=IF(PERIOD=4,18,IF(PERIOD=5,55,DRAWNULL));
Z:=IF(PERIOD=4,220,IF(PERIOD=5,0,DRAWNULL));
MA1:MA(C,N),COLORRED;
MA2:MA(C,M),COLORGREEN;
MA3:MA(C,K),COLORBLUE;
MA4:MA(C,Z),DOTLINE;
