通达信老鸭头（副图）源码

MA5 := MA(CLOSE,5);

MA10 := MA(CLOSE,10);

MA60 := MA(CLOSE,60);

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，至此形成鸭颈部}

PDAY3 := BARSLAST(HIGH=HHV(HIGH,PDAY2));{形成头部，要下跌}

PDAY4 := BARSLAST(CROSS(MA10,MA5));{下跌后，5日均线和10日均线死叉}

PDAY5 := BARSLAST(CROSS(MA5,MA10));{回落不久，5日均线和10日均线形成金叉，形成嘴部}

A1:= PDAY1 PDAY2 AND PDAY2 PDAY3 AND PDAY3 PDAY4 AND PDAY4 PDAY5 AND PDAY5

A2:= COUNT(CROSS(MA10,MA5),PDAY2)=1;

A1 AND A2;