老鸭头 主图 
MA5:MA(CLOSE,5),COLOR00FFFF;
MA10:MA(CLOSE,10),COLORFF00FF;
MA60:MA(CLOSE,60),COLOR00FF00;
PDAY1:=BARSLAST(CROSS(MA5,MA60));{5日均线上穿60日均线}
PDAY2:=BARSLAST(CROSS(MA10,MA60));{10日均线上穿60日均线}
PDAY3:=BARSLAST((HIGH=HHV(HIGH,PDAY2)));{形成头部要下跌}
PDAY4:=BARSLAST(CROSS(MA10,MA5));{下跌后，5日均线与10日均线形成死叉}
PDAY5:=BARSLAST(CROSS(MA5,MA10));{回落不久后，5日均线与10日均线形成金叉}
A1:=(PDAY1>PDAY2) AND (PDAY2>PDAY3) AND (PDAY3>PDAY4) AND (PDAY4>PDAY5) AND (PDAY5<5);
A2:=(COUNT(CROSS(MA10,MA5),PDAY2)=1);
AA:=IF(A1 AND A2 AND (MA(CLOSE,5)>=MA(CLOSE,10)) AND (MA(CLOSE,10)>MA(CLOSE,60)),10,0);
BB:=FILTER(A1 AND A2 AND (MA(CLOSE,5)>=MA(CLOSE,10)) AND (MA(CLOSE,10)>MA(CLOSE,60)),5);
老鸭头:IF(AA AND BB,1,0),COLOR00FF00;
DRAWICON(AA AND BB,LOW,1),COLORFFFF00;
DRAWTEXT(AA AND BB,(LOW)*(0.98),'老鸭头'),COLOR00FFFF;

老鸭头副图
Var1:=MA(CLOSE,5);
Var2:=MA(CLOSE,10);
Var3:=MA(CLOSE,60);
Var4:=BARSLAST(CROSS(Var1,Var3));
Var5:=BARSLAST(CROSS(Var2,Var3));
Var6:=BARSLAST(HIGH=HHV(HIGH,Var5));
Var7:=BARSLAST(CROSS(Var2,Var1));
Var8:=BARSLAST(CROSS(Var1,Var2));
Var9:=Var4>Var5 AND Var5>Var6 AND Var6>Var7 AND Var7>Var8 AND Var8<5;
VarA:=COUNT(CROSS(Var2,Var1),Var5)=1;
老鸭头:Var9 AND VarA and Var3>ref(Var3,1);
DRAWICON( Var9 AND VarA and Var3>ref(Var3,1),1.1,1);

老鸭头选股 
MA5 := MA(CLOSE,5);
MA10 := MA(CLOSE,10);
MA60 := MA(CLOSE,60);
PDAY1 := BARSLAST(CROSS(MA5,MA60));
PDAY2 := BARSLAST(CROSS(MA10,MA60));
PDAY3 := BARSLAST(HIGH=HHV(HIGH,PDAY2));
PDAY4 := BARSLAST(CROSS(MA10,MA5));
PDAY5 := BARSLAST(CROSS(MA5,MA10));
A1:= PDAY1>PDAY2 AND PDAY2>PDAY3 AND PDAY3>PDAY4 AND PDAY4>PDAY5 AND PDAY5<5;
A2:= COUNT(CROSS(MA10,MA5),PDAY2)=1;
A1 AND A2;