[R] Step and stepAIC

Dieter Menne dieter.menne at menne-biomed.de
Thu May 7 18:37:25 CEST 2009

Jun Shen <jun.shen.ut <at> gmail.com> writes:

> I changed the "method" to ML for my lme call. Now I get a different error
> when running the stepAIC
> Error in terms.formula(formula, data = data) :
>   'data' argument is of the wrong type
> What does that mean?
> The same dataset was used for an lm call and everything is fine to run
> stepAIC.

Show sessionInfo() (do you have the recent version?)

Show str(yourdataset)

Show lme(.... your formula)


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