进行最优化搜索中的牛顿法以及最速下降法运算，可根据已知函数以及初始点位置查到最优点-Optimized search of the Newton method and steepest descent method operation, according to the initial position of known function, and found the benefits of

根据经纬度，实现IDW内插的调用函数，具体参量已做说明，内附内查结果示样(According to the latitude and longitude, realize the function call of IDW interpolation, the specific parameters have been illustrated, containing the results found in the sample)