You create objects A, B, and K, but then use A, B, and X in the call to nls.lm().
I have no idea if nls.lm is the right tool for your job, but I do know that you need to use the same names. Sarah On Tue, Jun 30, 2020 at 6:01 AM Luigi Marongiu <marongiu.lu...@gmail.com> wrote: > Hello, > I am trying to optimize a function with the function nls.lm from the > package minpack.lm. But I can't get it right: > ``` > A = 3261 > B = 10 > K = c(8, 24, 39, 63, 89, 115, 153, 196, 242, 287, 344, > 408, 473, > 546, 619, 705, 794, 891, 999, 1096, 1242, 1363, 1506, 1648, > 1753, > 1851, 1987, 2101, 2219, 2328, 2425, 2575, 2646, 2698, 2727, 2771, > 2818, > 2853, 2895, 2926, 2964, 2995, 3025, 3053, 3080, 3102, 3119, 3141, > 3152, > 3159, 3172, 3182, 3196, 3209, 3220, 3231, 3239, 3246, 3252, 3261) > O = nls.lm(list(a=A, b=B, x=X), holling, > lower=NULL, upper=NULL, jac = NULL) > > Error in fn(par, ...) : argument "x" is missing, with no default > ``` > What am I missing? > Is nls.lm the right function for functions that are not linear? > Thank you > -- > Best regards, > Luigi > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Sarah Goslee (she/her) http://www.sarahgoslee.com [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.