Terry Therneau wrote:
I have a problem whose solution requires non-negative least squares. That is minimize sum(y - Xbeta)^2 subject to beta >=0 Splus has the nnls.fit command. Is there an R alternative?
There is a package nnls on CRAN by Kate Mullen and Ivo van Stokkum: http://cran.r-project.org/web/packages/nnls/index.html HTH, Tobias ______________________________________________ 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.