曾氏KDJ副图，低位出现红色三角买入

RSV:=(CLOSE-LLV(LOW,N))/(HHV(HIGH,N)-LLV(LOW,N))*100;

K:SMA(RSV,M1,1),LINETHICK2,COLOREEEE33;

D:SMA(K,M2,1),LINETHICK2 ,COLOR6699FF;

J:=3*K-2*D;

买入:(CROSS(J,D )AND CROSS(J,K)AND K <40 AND D<50 AND J<50)*50,colorred;

DRAWTEXT(买入=50,买入,'始');

DRAWTEXT(CROSS(D,K),K,'终');