大地实习，将斜距转换为高斯投影面上的平距，供学习参考，附源代码-Land internships, the slant range into a flat surface away from the Gauss projection for the study reference, with source code

包括了大地主题正反算，高斯投影正反算和斜距投影，都有界面-Including earth theme and negative balance, the Gauss projection positive and negative count and slant range projection has an interface

slant angle in opitcal character recog