通达信情牵一线（副图，无未来，简单易懂），一线知顶底公式

网络搜来，指标简单易懂，值得收藏。

{情牵一线,tdx副图}
K:3*SMA((CLOSE-LLV(LOW,27))/(HHV(HIGH,27)-LLV(LOW,27))*100,5,1)-2*SMA(SMA((CLOSE-LLV(LOW,27))/(HHV(HIGH,27)-LLV(LOW,27))*100,5,1),3,1),COLORWHITE;
{D:SMA(K,5,1),COLORFFFF00;
J:4*K-3*D,COLORFF00FF;}
IF(K>REF(K,1),K,DRAWNULL),COLORRED,LINETHICK2;
IF(K {DRAWICON(FILTER(J<=REF(J,1) AND J>80,8), J*1.2,2);}
DRAWICON(FILTER(K<=REF(K,1) AND K>80,8), K*1.2,2);
{操底:IF(CROSS(J,-50) OR CROSS(J,-30) OR CROSS(J,-10),-18,-50),COLORCYAN;}
买入时间:IF(CROSS(K,10)