Re: [R] Warning Message: In if (deparse(params[[nm]][[3]]) != "1")

I am not sure if it is possible to provide a data set sufficient to fit this model and reproduce the error. However, I noticed that the warnings no longer show up when the number of predictors for b0 and b1 in b0~ and b1 ~ is small (3 to 5). Could this be an effect too many "subcoefficien

[R] Warning Message: In if (deparse(params[[nm]][[3]]) != "1")

I am using the gnls procedure in nlme package to fit a nonlinear model as: nl.fit<-gnls(Y ~ b0*exp(b1/X), data = data1, params=list( b0~p1+I(p1^2)+p2+I(p2^2)+p3+I(p3^2)+p5+p6 b1~p8+p2+I(p2^2)+p3+p9+p10+p11), star