[R] replication of latin squares --- again

[Spencer Graves]

Dear Lamack:

Have you considered "lme" or "varcomp"?  For me, essential documentation 
for "lme" is Pinhiero and Bates (2000) Mixed-Effects Models in S and 
S-Plus (Springer).

In my experience, it is easier to get "varcomp" to run but harder to get 
the answers I want from it.

Best Wishes,
Spencer Graves
##################################
lamack lamack wrote:
> Dear all, this is a newbie's question.
> 
> I have a 4x4 latin square replicated 3 times. That is:
> 
>          operators
> batches 1  2  3  4
>  1      A  B  C  D
>  2      B  C  D  A
>  3      C  D  A  B
>  4      D  A  B  C
> 
>          operators
> batches 1  2  3  4
>  5      A  B  C  D
>  6      B  C  D  A
>  7      C  D  A  B
>  8      D  A  B  C
> 
>          operators
> batches 1  2  3  4
>  9      A  B  C  D
>  10     B  C  D  A
>  11     C  D  A  B
>  12     D  A  B  C
> 
> I have used the same operators but different batches.
> How can I get the anova table for this design using R?
> I have created a R object as
> 
>  bathces operators treatment  y   rep
>   1         1        A        y1   1
>   1         1        b        b2   1
>   .         .        .        .    .
> and so on
> 
> I appreciate in advance.
> 
> L.
> 
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