Q：如何在excel中表示出16方位角
1. 通過平面坐標計算角度
J2=DEGREES(ATAN2((E3-E2),(D3-D2)))
E3：y2，E2：y1，D3：x2，D2：x1
2. 通過角度計算16方位
=IF(J2>=168.75,"西",IF(J2>=146.25,"西西北",IF(J2>=123.75,"西北",IF(J2>=101.25,"北西北",IF(J2>=78.75,"北",IF(J2>=56.25,"北東北",IF(J2>=33.75,"東北",IF(J2>=11.25,"東東北",IF(J2>=-11.25,"東東南",IF(J2>=-33.75,"東南",IF(J2>=-56.25,"東南",IF(J2>=-78.75,"南東南",IF(J2>=-101.25,"南",IF(J2>=-123.75,"南西南",IF(J2>=-146.25,"西南",IF(J2>=-168.75,"西西南","西"))))))))))))))))