C#: 数字经纬度和度分秒经纬度间的转换
时间：2014-06-11 09:34:53
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using
System;using
System.Collections.Generic;using
System.Linq;using
System.Text;namespace
ConsoleApplication1{ /// <summary> /// 公用的特殊函数 /// </summary> public
class SpecialFunctions { #region 构造函数 /// <summary> /// 构造函数 /// </summary> public
SpecialFunctions() { } #endregion #region 方法 /// <summary> /// 数字经纬度和度分秒经纬度转换 (Digital degree of latitude and longitude and vehicle to latitude and longitude conversion) /// </summary> /// <param name="digitalLati_Longi">数字经纬度</param> /// <return>度分秒经纬度</return> static
public string ConvertDigitalToDegrees(string
digitalLati_Longi) { double
digitalDegree = Convert.ToDouble(digitalLati_Longi); return
ConvertDigitalToDegrees(digitalDegree); } /// <summary> /// 数字经纬度和度分秒经纬度转换 (Digital degree of latitude and longitude and vehicle to latitude and longitude conversion) /// </summary> /// <param name="digitalDegree">数字经纬度</param> /// <return>度分秒经纬度</return> static
public string ConvertDigitalToDegrees(double
digitalDegree) { const
double num = 60; int
degree = (int)digitalDegree; double
tmp = (digitalDegree - degree) * num; int
minute = (int)tmp; double
second = (tmp - minute) * num; string
degrees = ""
+ degree + "°"
+ minute + "′"
+ second + "″"; return
degrees; } /// <summary> /// 度分秒经纬度(必须含有‘°‘)和数字经纬度转换 /// </summary> /// <param name="digitalDegree">度分秒经纬度</param> /// <return>数字经纬度</return> static
public double ConvertDegreesToDigital(string
degrees) { const
double num = 60; double
digitalDegree = 0.0; int
d = degrees.IndexOf(‘°‘); //度的符号对应的 Unicode 代码为：00B0[1]（六十进制），显示为°。 if
(d < 0) { return
digitalDegree; } string
degree = degrees.Substring(0, d); digitalDegree += Convert.ToDouble(degree); int
m = degrees.IndexOf(‘′‘); //分的符号对应的 Unicode 代码为：2032[1]（六十进制），显示为′。 if
(m < 0) { return
digitalDegree; } string
minute = degrees.Substring(d + 1, m - d - 1); digitalDegree += ((Convert.ToDouble(minute)) / num); int
s = degrees.IndexOf(‘″‘); //秒的符号对应的 Unicode 代码为：2033[1]（六十进制），显示为″。 if
(s < 0) { return
digitalDegree; } string
second = degrees.Substring(m + 1, s - m - 1); digitalDegree += (Convert.ToDouble(second) / (num * num)); return
digitalDegree; } /// <summary> /// 度分秒经纬度(必须含有‘/‘)和数字经纬度转换 /// </summary> /// <param name="digitalDegree">度分秒经纬度</param> /// <param name="cflag">分隔符</param> /// <return>数字经纬度</return> static
public double ConvertDegreesToDigital_default(string
degrees) { char
ch = ‘/‘; return
ConvertDegreesToDigital(degrees, ch); } /// <summary> /// 度分秒经纬度和数字经纬度转换 /// </summary> /// <param name="digitalDegree">度分秒经纬度</param> /// <param name="cflag">分隔符</param> /// <return>数字经纬度</return> static
public double ConvertDegreesToDigital(string
degrees, char
cflag) { const
double num = 60; double
digitalDegree = 0.0; int
d = degrees.IndexOf(cflag); if
(d < 0) { return
digitalDegree; } string
degree = degrees.Substring(0, d); digitalDegree += Convert.ToDouble(degree); int
m = degrees.IndexOf(cflag, d + 1); if
(m < 0) { return
digitalDegree; } string
minute = degrees.Substring(d + 1, m - d - 1); digitalDegree += ((Convert.ToDouble(minute)) / num); int
s = degrees.Length; if
(s < 0) { return
digitalDegree; } string
second = degrees.Substring(m + 1, s - m - 1); digitalDegree += (Convert.ToDouble(second) / (num * num)); return
digitalDegree; } #endregion }} |
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