[R] fitting growth curves

[Antonio Olinto]

Dear R-list members,

Cynthia M. Jones wrote a paper (Fitting growth curves to retrospective
size-at-age data, Fisheries Research 46(2000):123-129; abstract at
http://www.elsevier.nl/gej-ng/10/19/44/70/24/37/abstract.html)where the
SAS procedure MIXED, Macro NLINMIX (Littell et. al., 1996)was used to
estimate the von Bertalanffy growth function parameters assuming that
data from the same fish are repeated-measures with autoregressive
correlation structure and fitting with a nonlinear repeated-measures
model.

Is there any similar procedure that I can use in R?

Thanks,

Antonio Olinto
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