R help - Jan 2010 - Using outer with function predict

Hey everybody,

I have a problem with the combination of the commands outer() and predict(). I
want to visualize the solutions of a regression modell in a matrix. Therefore I
want to use the command predict for a linear modell as the function inside the
command outer. I've made a small example:

          x = 1:10
          y = 11:20
          z = rnorm(10)
          lm.1 = lm(z ~ x*y)
          mat = outer(x,y, predict, lm.1) 

That didn't work, but I don't understand why? Isn't it possible to
combine these two commands? I hope my intention becomes clear.
I'm looking forward for any ideas or hints, that might help me. 
I wish everybody a nice weekend.

Best regards

Etienne
___________________________________________________________
Preisknaller: WEB.DE DSL Flatrate f?r nur 16,99 Euro/mtl.! 
http://produkte.web.de/go/02/

Try this:

outer(x, y, FUN = function(x, y)predict(lm.1, data.frame(x, y)))


On Fri, Jan 8, 2010 at 5:49 PM, Etienne Stockhausen <einohr2002 at web.de>
wrote:
> Hey everybody,
>
> I have a problem with the combination of the commands outer() and
predict(). I want to visualize the solutions of a regression modell in a matrix.
Therefore I want to use the command predict for a linear modell as the function
inside the command outer. I've made a small example:
>
> ? ? ? ? ?x = 1:10
> ? ? ? ? ?y = 11:20
> ? ? ? ? ?z = rnorm(10)
> ? ? ? ? ?lm.1 = lm(z ~ x*y)
> ? ? ? ? ?mat = outer(x,y, predict, lm.1)
>
> That didn't work, but I don't understand why? Isn't it possible
to combine these two commands? I hope my intention becomes clear.
> I'm looking forward for any ideas or hints, that might help me.
> I wish everybody a nice weekend.
>
> Best regards
>
> Etienne
> ___________________________________________________________
> Preisknaller: WEB.DE DSL Flatrate f?r nur 16,99 Euro/mtl.!
> http://produkte.web.de/go/02/
>
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>


-- 
Henrique Dallazuanna
Curitiba-Paran?-Brasil
25? 25' 40" S 49? 16' 22" O