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20737
2004 Jan 22
4
Fitting compartmental model with nls and lsoda?
Dear Colleagues,
Our group is also working on implementing the use of R for pharmacokinetic compartmental analysis. Perhaps I have missed something, but
> fit <- nls(noisy ~ lsoda(xstart, time, one.compartment.model, c(K1=0.5, k2=0.5)),
+ data=C1.lsoda,
+ start=list(K1=0.3, k2=0.7),
+ trace=T
+ )
Error in eval(as.name(varName), data) : Object