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.