[R] fit non linear model using weighted least squares

From: Di Tanna Gian Luca <GDiTanna_at_regione.emilia-romagna.it>
Date: Thu 04 Aug 2005 - 19:52:05 EST

Dear all,

I am new in using R.  

I'd like to fit a non linear model using weighted least squares.

I am using the gnls function but I don't know how to perform a weighted least squares (my weights are a "simple" colum of data).  

Thank you in advance,

Gian Luca  

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