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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