pysal.lib.cg.linear2arcdist¶

pysal.lib.cg.linear2arcdist(linear_dist, radius=6371.0)[源代码]¶

将单位球体（r3）中的线性距离转换为基于提供的半径的弧距离

实例

>>> pt0 = (0,0)
>>> pt1 = (180,0)
>>> d = arcdist(pt0,pt1,RADIUS_EARTH_MILES)
>>> d == linear2arcdist(2.0, radius = RADIUS_EARTH_MILES)
True