由两点经纬度计算距离-arcgis+server+C#-Calculating the distance the-arcgis+server+C# by two o' clock the latitude and longitude

Polygon是使用vb书写的一个判断多边形顺（逆）时针、凸凹性的程序。多变形数据存储在.dat文件中，使用时，只需要导入数据即可判断-Polygon is the use of a judge writing vb polygon Soon (inverse) clock, convexity of the procedure. More data is stored in the deformation. Dat file, used only to determine the need t

更新说明： 此版本在版本1,2的基础上做了2点重大改进-Update: this version in version 1, 2 major improvements made on the basis of the 2 o clock