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351051
2010 Jan 27
1
term.formula error when updating an nls object
...ough it is
not necessarily the way I would like to fit the model in this
case).
m2b <- update(m1, log(.) ~ log(.))
m3 <- update(m2b, . ~
log(Rm * Contrast^ex/(Contrast^fx + sig^fx)),
start = list(Rm = 30, sig = 0.05, ex = 3,
fx = 3.1))
sessionInfo()
R version 2.10.1 Patched (2010-01-25 r51051)
i386-apple-darwin9.8.0
locale:
[1] en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods
[7] base
Thanks, in advance, for any help.
Ken
--
Ken Knoblauch
Inserm U846
Stem-cell and Brain Research Institute
Depa...