Dear all, I got a wierd problem when using lm.ridge() in MASS library. When my X matrix has few columns, there is no problem. But when my X matrix gets larger (over 1000 columns), I got the following error:
Error in Xs$v %*% a : non-conformable arguments In addition: Warning messages: 1: longer object length is not a multiple of shorter object length in: d^2 + rep(lambda, rep(p, k)) 2: longer object length is not a multiple of shorter object length in: drop(d * rhs)/div The R code I use for the calculation is "lm.ridge( y ~ x,lambda=seq(1,15,1))". Please advice. Thanks a lot! Jeny ______________________________________________ R-help@stat.math.ethz.ch 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.