[R] question about formula for lm

[Thomas Petzoldt]

Why not using:

lm(X[[Ytext]]~Xvar,data=X)


ThPe


Pedro Mardones wrote:
> Dear all;
> 
> Is there any way to make this to work?:
> 
> .x<-rnorm(50,10,3)
> .y<-.x+rnorm(50,0,1)
> 
> X<-data.frame(.x,.y)
> colnames(X)<-c("Xvar","Yvar")
> 
> Ytext<-"Yvar"
> 
> lm(Ytext~Xvar,data=X) # doesn't run
> 
> lm(Yvar~Xvar,data=X) # does run
> 
> The main idea is to use Ytext as input in a function, so you just type
> "Yvar" and the model should fit....
> Also, I need to avoid the expression X$Yvar~X$Xvar
> 
> Thanks for any idea
> 
> PM
> 
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