TR1 : MAX(MAX((HIGH-LOW),ABS(REF(CLOSE,1)-HIGH)),ABS(REF(CLOSE,1)-LOW));
ATR : MA(TR1,m)
if tr>=ref(atr,1)and close>=open and time>091600 and time<151300 then begin
sellshort(1,0,market);
buy(holding=0,1,market);
TR值大于等于ATR开仓多。
老师，请问这里总提示ATR未定义，是什么原因