[R] nls() and "singular grandient"

From: Guillaume STORCHI <nioniodesbois_at_yahoo.fr>
Date: Wed 23 Mar 2005 - 00:45:29 EST


I have a problem with nls() when I want to fit a model with more than two parameters to be fitted which are written as start=list(a1=,a2=,a3=,...). Everytime, it displays:'error... singular gradient' it's a real pain!!!

Hope sb knows something about this



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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed Mar 23 00:48:58 2005

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