通达信超跌抄底可买，再优化了一次，抄底信号更加灵敏

 
VAR1:=IF(CLOSE>REF(CLOSE,1),VOL,0);
SH:SUM(VAR1,13),NODRAW;
趋势线: 3*SMA((CLOSE-LLV(LOW,26))/(HHV(HIGH,26)-LLV(LOW,26))*108,5,1)-2*SMA (SMA((CLOSE-LLV(LOW,26))/(HHV(HIGH,26)-LLV(LOW,26))*108,5,1),3,1),LINETHICK2,COLORWHITE;
可买: IF(CROSS(趋势线,超跌线),81,0),LINETHICK2,COLORRED;
 
 

源码
超跌线:=13;
CROSS(可买,8);