{双底结构副图指标}
N:=20;
TROUGH1:=LLV(LOW,N)=LOW;
TROUGH2:=REF(LLV(LOW,N),1)=REF(LOW,1);
DOUBLE_BOTTOM:=TROUGH1 AND TROUGH2 AND
ABS(LOW-REF(LOW,1))/REF(LOW,1)<0.03 AND
COUNT(TROUGH1 OR TROUGH2,N)=2;
DRAWICON(DOUBLE_BOTTOM,LOW*0.98,1);
DRAWLINE(TROUGH1,LOW,TROUGH2,REF(LOW,1),0),COLORRED;
VOL_CONFIRM:=VOL>MA(VOL,5) AND REF(VOL,1)>MA(VOL,5);
BUY_SIGNAL:=DOUBLE_BOTTOM AND VOL_CONFIRM;
STICKLINE(BUY_SIGNAL,0,1,1,0),COLORRED;
DRAWTEXT(BUY_SIGNAL,1.2,'双底'),COLORWHITE;
