[R] L1 nonlinear approximation

[roger koenker]

?nlrq in the quantreg package, for some values of the word  
"constrained" ...


url:    www.econ.uiuc.edu/~roger            Roger Koenker
email    rkoenker at uiuc.edu            Department of Economics
vox:     217-333-4558                University of Illinois
fax:       217-244-6678                Champaign, IL 61820


On Jul 3, 2008, at 3:46 PM, Tine Mlac wrote:

> Hi!
>
> Does anyone knows a solver or R package for L1 nonlinear constrained  
> approximation besides constrOptim or optim and Nelder-Mead method?
>
> Bye,
>  Tine
>
> ps.: L1 means L1-norm => sum of absolute values.
>
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