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372157
2002 Oct 22
1
constraints again
I would like to fit the following function on my data.
out.nls<-nls(z ~ p1+
(p2*dat)+(p3*dat^2)+(p4*dat^3)+(p5*AgeS)+(p6*AgeS^2)+(p7*AgeS^3)+
(p8*(dat*AgeS))+(p9*(dat^2*AgeS))+(p10*(dat^3*AgeS))+
(p11*(dat*AgeS^2))+(p12*(dat*AgeS^3))+(p13*(dat^2*AgeS^2))+
(p14*(dat^2*AgeS^3))+(p15*(dat^3*AgeS^3)),