一个很好用的之底选股指标公式

A1:=(H+L+O+3*C)/6;
bias1:=(A1-EMA(A1,21))/EMA(A1,21)*100;
DIFF:=BIAS1;
顶背离:=A1<=REF(A1,1) AND diff>REF(diff,1);
底:顶背离;