来源:Internet,编辑:股旁网,2015-08-21
N:=20; boll:=MA(CLOSE,N); UPPER:=BOLL+2*STD(CLOSE,N); LOWER:=BOLL-2*STD(CLOSE,N); DD:=UPPER-LOWER; XG:crOSS(0.5,DD=LLV(DD,30));