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
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