During the log data processing,it is necessary to resample the borehole data,varying the regular sample spaces or changing irregular spaces into regular sample spaces or vice versa.

• 在测井资料处理解释过程中，需要对井筒数据进行重采样。全局多项式和三次样条插值是目前常用的数值插值重采样方法，但存在计算量大、局部形变大等缺点。