[R] non-negative least squares?

[Robert Abugov]

In July of 1999 Douglas Bates invited R users to implement an algorithm for
non-negative least squares based on Bates and Wolf, 1984: Communications in
Statistics, Part B 13:841-850.
<http://www.ens.gu.edu.au/robertk/R/help/99b/0058.html>

I'm wondering if anybody has implemented this or something similar so I
won't have to reinvent the wheel.

Thanks!

Bob Abugov

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