代碼片段（通達(dá)信）：

BUY:= 你的買進(jìn)信號(hào);
SELL:= 你的賣出信號(hào);

B2:=BARSLAST(BUY);
S2:=BARSLAST(SELL);

FBUY:=CROSS(S2,B2);
FSELL:=CROSS(B2,S2);

過濾后的買進(jìn)信號(hào):= BUY AND FBUY;
過濾后的賣出信號(hào):= SELL AND FSELL;

示例代碼：

過濾前:C;
BUY:= C>REF(C,1)*1.05;
SELL:= C<REF(C,1)*0.97;

B2:=BARSLAST(BUY);
S2:=BARSLAST(SELL);

FBUY:=CROSS(S2,B2);
FSELL:=CROSS(B2,S2);

BUYNEW:= BUY AND FBUY;
SELLNEW:= SELL AND FSELL;

過濾后: 過濾前+5;
DRAWICON(BUYNEW,過濾后,1);
DRAWICON(SELLNEW,過濾后,2);

DRAWICON(BUY, 過濾前,1);
DRAWICON(SELL, 過濾前,2);