Dear R Users, I am working for the United Nations to construct a complete life table from an abridged table. I want to use the code of Hydman Filter by Rob J Hydman but an error sentence always appears and it simply doesn't run-- source("C:/R/Jamie/HymanFilter.R") Error in .C("spline_coef", method = as.integer(method), n = nx, x = x, : C symbol name "spline_coef" not in DLL for package "base" Can you please tell me what's the problem? I appreciate your help so much! Sincerely, Jamie Jamie Zuo Tel: 1-917-367-8000 Cell: 1-917-226-7531 Email: zjmgyx@hotmail.com MSN: zjmgyx@hotmail.com [[alternative HTML version deleted]]