10 2008 档案

计算经纬度距离
摘要: public static double GetCoorDistance(double x1, double y1, double x2, double y2){ double num = 111120.0; double num2 = num * Math.Cos((y1 + y2) * 0.00872664625); double num3 = (x1 - x2) * num2; double...阅读全文
posted @ 2008-10-15 15:32 半克拉鹅卵石 阅读(86) | 评论 (0) 编辑