I want to generate some orthogonal tables in my experiment design.
I searched http://search.r-project.org/ (RSiteSearch) whith key words such as
"orthogonal table", "orthogonal design", "latin square" etc and get no useful
result. the same result get by searching via google's insite search in r-cran
main web.
Some packages like "crossdes","AlgDesign" can Construction of Designs Based on
Mutually Orthogonal Latin Squares, I tried des.MOLS(package=crossdes)
> des.MOLS(4,3) # this may be 4 treatment, 3 period
[,1] [,2] [,3]
[1,] 1 2 3
[2,] 2 1 4
[3,] 3 4 1
[4,] 4 3 2
[5,] 1 3 4
[6,] 2 4 3
[7,] 3 1 2
[8,] 4 2 1
[9,] 1 4 2
[10,] 2 3 1
[11,] 3 2 4
[12,] 4 1 3
But it is not orthogonal tables which I want. If I misunderstand this function?
So any one knows how to construct orthogonal tables for example
L_8(2^7)---means 8 runs, 2 levels and 7 factors,
and many other orthogonal tables such as L_4(2^3), L_18(2*3^7) and so on,
with R.
Thanks for any suggestions.
Best wishes,
xjx
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