把变异MACD里面的“B”编一选股公式

编写要求：

MACD : 2*(DIFF-DEA), COLORSTICK; D1:=EMA(C,3)-EMA(C,8); D2:=EMA(O,3)-EMA(O,8); D3:=EMA(H,3)-EMA(H,8); D4:=EMA(L,3)-EMA(L,8); DRAWICON(CROSS(D1,DIFF) AND DIFF<0 ,D4-0.1,7); A:=(D1+D2)/2; 股价轨迹:A,COLORGREEN,LINETHICK2; DRAWTEXT(ISLASTBAR AND C>0,A,'●'),COLORMAGENTA; 目前位置:A,POINTDOT,COLORMAGENTA;

解答：

?DIFF:=EMA(CLOSE,12)-EMA(CLOSE,26);

D1:=EMA(C,3)-EMA(C,8);

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