多空趋势交易同花顺公式， 多空+均线配合

N1:=55;

MID:MA(CLOSE,20),colorcyan;

IF(MID>=REF(MID,1),MID,DRAWNULL),COLOR0099DD,LINETHICK2;

IF(MID<=REF(MID,1),MID,DRAWNULL),COLOR999900,LINETHICK2;

UPPER:MID + 2*STD(CLOSE,20),COLORFF00FF,LINETHICK1;

LOWER:MID - 2*STD(CLOSE,20),COLORFF8000,LINETHICK1;

DRAWTEXT(CROSS(EMA(CLOSE,1),EMA(CLOSE,13)),EMA(CLOSE,21)*0.97,"D"),colorred;

DRAWTEXT(CROSS(EMA(CLOSE,13),EMA(CLOSE,1)),HIGH,"K")*1.03,colorgreen;