测绘学中的高斯投影正反算，输入大地坐标相应参数，通过正算可得到高斯平面坐标；或输入中央子午线经度经反算得到大地坐标相应参数。-Gauss projection forward and backward count in geomatics. Input geodetic coordinate parameters,click direction algorithm ,user can get gauss plane coordinate or input Central meridian lon