On Jan 8, 2010, at 4:50 PM, Moohwan Kim wrote:
Dear R family I have a problem with invertibility in a matrix. m1 <- ar(x, method='mle') Error in solve.default(res$hessian * length(x)) : Lapack routine dgesv: system is exactly singular How could I avoid this problem?
Take out the collinear terms. David Winsemius, MD Heritage Laboratories West Hartford, CT ______________________________________________ R-help@r-project.org 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.
