KDJ底背离选股公式（源码，副图）

RSV:=(CLOSE-LLV(LOW,9))/(HHV(HIGH,9)-LLV(LOW,9))*100;K:=SMA(RSV,3,1);D:=SMA(K,3,1);J:=3*K-2*D;A2:=BARSLAST(REF(CROSS(K,D),1));K底背离:REF(C,A2+1)>LLV( L,3 ) AND REF(K,A2+1)<K AND CROSS(K,D) AND K<40;