Visual C++中在界面下画坐标轴，并标出横纵坐标系的刻度。,In Visual C++ under the contact surface the picture coordinate axis, and sections out the horizontal y-coordinate department the scale division.

自己用C#从底层开发的GIS系统，数据格式和坐标转换算法等均从底层开发，界面美观，数据格式可扩展性强-Their use of C# From the bottom of the development of GIS systems, data formats and coordinate transformation algorithm, etc. from the bottom of development, beautiful interface, data format scalabil

坐标转换 从经纬度坐标到大地坐标 利用网络上开源的资料，可以很容易的实现从经纬度坐标向各种投影坐标的转换，美国地质调查局开发USGS的GCTP就是很好的东西-Coordinate transformation from the latitude and longitude coordinates into geodetic coordinates the use of open source information network can be very easy to achieve fr

简单的坐标转换程序，可以实现XYX与BLH之间的转换。可是经过认证的呀。-The coordinates of the conversion process easy, you can achieve with blh xYx conversion between. But it certified.