波段寻底（主图源码指标，有图有真相）

YJD:=(EMA(CS,3)-50)*2;
STICKLINE(CROSS(YJD,-80),LOW*0.94,LOW*0.96,2,1),COLORYELLOW;
DRAWTEXT(CROSS(YJD,-80),LOW*0.95,'波段抄底'),COLORYELLOW;
VAR1:=REF(CLOSE,2);
A2:=SMA(MAX(CLOSE-VAR1,0),7,1)/SMA(ABS(CLOSE-VAR1),7,1)*100;
STICKLINE(A2 REF(A2,1) AND A2 79,1.02*HIGH,1.01*HIGH,5,0),COLOR00FFFF;
DRAWTEXT(A2 REF(A2,1) AND A2 79,1.01*HIGH,'波段顶'),COLORF000F0;