> On Jan 6, 2017, at 11:03 AM, Jacob Wegelin wrote:
>
> Given any regression model, created for instance by lm, lme, lmer, or rqs,
> such as
>
> z1<-lm(weight~poly(Time,2), data=ChickWeight)
>
> I would like a general way to obtain only those variables used for the model.
> In the current e
Given any regression model, created for instance by lm, lme, lmer, or rqs, such
as
z1<-lm(weight~poly(Time,2), data=ChickWeight)
I would like a general way to obtain only those variables used for the model. In the current example, this
"minimal data frame" would consist of the "weight" and "T
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