[R] lm with predictor matrix

[Roger D. Peng]

Your problem might be that the names of 'newframe' don't match 
the column names of 'tailmatrix'.  It's hard to tell because you 
don't provide an example.

Is 'newframe' a matrix or a dataframe?

If it is a dataframe, try:

names(newframe) <- colnames(tailmatrix)

predict(fit, newframe)

-roger

Claus Gwiggner wrote:

> Hello,
>   
>   can someone give me an example of how to fit a linear model where the
>   response is a matrix, please? (other than a loop over lm calls)
>   The ?lm points me to model.matrix but it is not clear to me how to use a
>   model matrix in an lm call.
>  
>   fit<-lm(headmatrix ~ tailmatrix) causes problems as soon as I
>  use predict(fit,newframe). The variables in tailmatrix are not found in
>  newframe.
>  
>   Thanks,
>   
>   Claus
> 
> 
> 
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