{ 计算 KDJ 指标 }
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;
{ 回档与反弹 }
DRAWTEXT(J > 80, J, '回'), COLORGREEN;
DRAWTEXT(J < 20, J, '弹'), COLORMAGENTA;
{ 买入信号 }
DRAWTEXT(CROSS(K, D) AND K >= 18 AND K <= 22, K, '买'), COLORRED;
{ 卖出信号 }
DRAWTEXT(CROSS(D, K) AND K >= 78 AND K <= 82, K, '卖'), COLORBLUE;
{ 易反转 }
DRAWTEXT(J > 100, J, '转'), COLORCYAN;
DRAWTEXT(J < 0, J, '转'), COLORYELLOW;