[R] Using lm to estimate a parameter?

[Uwe Ligges]

On 19.02.2013 11:23, hellen wrote:
> Hi,
> I have a data with three variables (X,Y,Z) and I have an equation as
> Z=X/(1+L*X/Y) where L is a constant which need to be estimated from data.
> How should I write the formula in lm or is it possible to fit a linear
> model in this case?

Neither, it is nonlinear in the parameters. See ?nls or ?optim, for example.

Uwe Ligges



>
> Thanks!
> Hallen
>
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