mx10271027 发表于 2014-2-27 09:55 
就是find不到stata的计算过程啊,如果知道计算过程的或者知道链接的话麻烦指教一下,谢谢!
在stata手册的R部分,找到mkspline命令的解释部分就有,
Title
mkspline — Linear and restricted cubic spline construction
Methods and formulas
mkspline is implemented as an ado-file.
Methods and formulas are presented under the following headings:
Linear splines
Restricted cubic splines
至于手册,论坛有免费下载的,请搜索。