上卖下买指标 (源码)

DRAWGBKLAST(2,STRIP(RgB(20,100,200),RGB(30,50,150),0));
D:=(2*EMA(LLV((H+L+O+C)/4,7),10)-(H+L+O+C)/4);
上卖下买:(3*D-2*SMA(D,10,1)),COLORred ,LINETHICK2;