16.740714,98.854409
https://tw.news.yahoo.com/%E8%B5%B4%E6%97%A5%E6%B3%A8%E6%84%8F-%E6%B2%96%E7%B9%A9%E7%A0%B4%E7%B4%80%E9%8C%84%E6%9A%B4%E9%9B%
示範算針影片在youtube, 網址如下 https://www.youtube.com/watch?v=XLa4Z0Z7RZM&list=PLvGaBN4amwUOdAnSE6Hlpc0TfANIpqrt7&