指标通过计算价格在9日和24日周期内的相对位置，结合短期均线和长期趋势生成买卖信号：
低买信号：当HG18连续7日下跌且HG7≤45时，显示“★注意低吸”（青色）；
高抛信号：当HG18连续6日上涨且HG7≥65时，显示“★注意高抛”（紫色）。
红绿柱状图（HG18变化）辅助判断趋势方向。操作策略为“低位买入，高位卖出”。
HG1:=(HHV(HIGH,9)-CLOSE)/(HHV(HIGH,9)-LLV(LOW,9))*100-70;
HG2:=SMA(HG1,9,1)+100;
HG3:=(CLOSE-LLV(LOW,9))/(HHV(HIGH,9)-LLV(LOW,9))*100;
HG4:=SMA(HG3,3,1);
HG5:=SMA(HG4,3,1)+100;
HG6:=HG5-HG2;
HG7:=IF(HG6>45,HG6-45,0);
HG16:=(CLOSE-LLV(LOW,24))/(HHV(HIGH,24)-LLV(LOW,24))*200*10;
HG18:=SMA(HG16,5,1)/100;
低买区:(COUNT(HG18<REF(HG18,1),7)=7 AND HG7<=45)*80,LINETHICK2,COLORCYAN;
DRAWTEXT(低买区>0,40,'★注意低吸'),LINETHICK2,COLORCYAN;
高抛区:(COUNT(HG18>REF(HG18,1),6)=6 AND HG7>=65)*80,LINETHICK2,COLOR7800FF;
DRAWTEXT(高抛区>0,70,'★注意高抛'),LINETHICK2,COLOR7800FF;
STICKLINE(HG18>REF(HG18,1),0,HG18,2.5,0),COLOR7800FF;
STICKLINE(HG18<REF(HG18,1),0,HG18,2.5,0),COLORCYAN;
