[R] Linear Models with positive coefficients?

[Christoph M. Friedrich]

Hi,
is it possible in one of the libraries on linear methods to constrain
the coefficients to 
be positive? 

Thanks
  Chris
-- 
Christoph M. Friedrich        | mailto:friedrich at computer.org 
Gesellschaft für Modulfermenterbau mbH (GfM mbH) |
http://www.tussy.uni-wh.de/~chris
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