在K线图上画出一组动态轨道线，股价碰到下轨就是低吸机会，上轨附近该走就走，不用盯盘数均线。
信号速查
① 下轨买入 — 上日最低价跌破波段低、当日收阳且收盘价站回波段低上方，同时轨道上移 → 触底反弹可考虑低吸
② 上轨卖出 — 上日最高价触及波段高、上日收阳、当日收阴 → 高位遇阻，减仓或暂避
③ M13趋势确认 — M13均线红色代表向上持股，绿色代表向下持币，红绿一目了然
④ 涨停标记 — 涨停K线自动标紫红，方便复盘时快速定位异动
⚠️ 注意：该指标使用了XMA未来函数计算波段高低轨，历史回测信号看起来完美，但实盘轨道线会随新K线漂移。信号速查中的条件描述基于逻辑而非精确回测，仅供参考。
选股公式 新建条件选股公式粘贴即可
M3:=MA(C,3);
M13:=MA(C,13);
XG:C>O AND C>M13 AND REF(L,1)<REF(M13,1) AND REF(C,1)<REF(O,1);
【主图指标】 已测试通过
通达信 → 功能 → 公式系统 → 公式管理器 → 新建 → 粘贴 → 确定
{5日线轨道}
所属地区:DRAWTEXT_FIX(1,0,0,0,'地区：'),COLORYELLOW;DRAWTEXT_FIX(1,0.05,0,0,DYBLOCK),COLORYELLOW;
所属行业:DRAWTEXT_FIX(1,0,0.08,0,'行业：'),COLORYELLOW;
DRAWTEXT_FIX(1,0.05,0.08,0,HYBLOCK),COLORYELLOW;
所属概念:DRAWTEXT_FIX(1,0,0.16,0,'概念：'),COLORYELLOW;DRAWTEXT_FIX(1,0.05,0.16,0,GNBLOCK),COLORYELLOW;
所属风格:DRAWTEXT_FIX(1,0,0.24,0,'风格：'),COLORYELLOW;
DRAWTEXT_FIX(1,0.05,0.24,0,FGBLOCK),COLORYELLOW;
上市日期:=CONST(DAYTODATE((DATETODAY(DATE)-FINANCE(42))))+19000000,NODRAW;
DRAWTEXT_FIX(1,0,0.32,0,'上市日期:'),COLORYELLOW;DRAWNUMBER_FIX(1,0.05,0.32,0,上市日期),COLORYELLOW;
自由流通市值:=STRCAT(STRCAT('自由流通市值：', CON2STR(C*FINANCE(46)/100000000,2)),'亿');
DRAWTEXT_FIX(1,0,0.4,0,'自由流通市值:'),COLORYELLOW;
DRAWNUMBER_FIX(1,0.08,0.4,0,自由流通市值),COLORYELLOW;
M3:MA(C,3),COLORGREEN,LINETHICK1;
M13:MA(C,13),COLORGREEN,LINETHICK1;
B:=M3<REF(M3,1);
IF(B-1,M3,DRAWNULL)COLORRED,LINETHICK2;
{DRAWICON(CROSS(C,M5),M5-0.5,7);
DRAWICON(CROSS(M5,C),M5+0.6,8);}
波段高:(XMA(XMA(HIGH,30),30)-XMA(XMA(LOW,30),30))*2+XMA(XMA(HIGH,30),30),COLORWHITE,LINETHICK1;
波段低:XMA(XMA(LOW,30),30)-(XMA(XMA(HIGH,30),30)-XMA(XMA(LOW,30),30))*1.5,COLORWHITE,LINETHICK1;
俞言友情:(波段高+波段低)/2,DOTLINE,COLOR909090;
IF(波段高>=REF(波段高,1),波段高,DRAWNULL),COLORYELLOW,LINETHICK1;
IF(波段低>=REF(波段低,1),波段低,DRAWNULL),COLORYELLOW,LINETHICK1;
IF(波段高<=REF(波段高,1),波段高,DRAWNULL),COLOR008800,LINETHICK1;
IF(波段低<=REF(波段低,1),波段低,DRAWNULL),COLOR008800,LINETHICK1;
IF(M13>=REF(M13,1),M13,DRAWNULL),COLORRED,LINETHICK1;
IF(M13<=REF(M13,1),M13,DRAWNULL),COLORGREEN,LINETHICK2;
STICKLINE(REF(LOW,1)<波段低 AND CLOSE>波段低 AND 波段高>=REF(波段高,1) AND CLOSE>OPEN,CLOSE,OPEN,(-1),0),COLORYELLOW;
STICKLINE(REF(HIGH,1)>=波段高 AND REF(CLOSE,1)>REF(OPEN,1) AND CLOSE<OPEN,CLOSE,OPEN,(-1),0),COLORFF6600;
DRAWTEXT_FIX(ISLASTBAR,0,0,0,FGBLOCK);
DRAWTEXT_FIX(ISLASTBAR,0,0.1,0,GNBLOCK);
DRAWICON(REF(LOW,1)<波段低 AND CLOSE>波段低 AND 波段高>=REF(波段高,1) AND CLOSE>OPEN,LOW,5);
DRAWICON(REF(HIGH,1)>=波段高 AND REF(CLOSE,1)>REF(OPEN,1) AND CLOSE<OPEN,HIGH,6);
C2:=REF(C,1);
涨停:=IF((C-C2)*100/C2>=(10-0.01*100/C2),1,0);
STICKLINE(涨停,OPEN,CLOSE,3,0),COLORMAGENTA;
STICKLINE(涨停,H,L,0,0),COLORMAGENTA;
⚠️ 指标仅供参考，不构成投资建议。股市有风险，入市需谨慎。
