R-users E-mail: [email protected] My understanding is that package "mgcv" is based on "Generalized Additive Models: An Introduction with R (by Simon N. Wood)". On the page 126 of this book, eq(3.4) looks a quartic equation with respect to "x", not a cubic equation. I am wondering if all routines which uses cubic splines in mgcv are based on this quartic equation. In my humble opinion, the '^4' in the first term of the second line of this equation should be '^3'.
K. Takezawa -- ***** [EMAIL PROTECTED] ***** http://cse.naro.affrc.go.jp/takezawa/intro.html [[alternative HTML version deleted]] ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
