R: Data Layout of Factorial Design

Question

I am trying to write the data layout of as^k factorial design in R. So i started with the smallest factorial design,that is, 2^2 design.

The data layout of a 2^2 factorial design is :

   00 10
   01 11

0 indicates low level while 1 indicates high level of a factor .

that is, if i have two factors such as factor A and factor B then 10 indicates high level of factor A and low level of factor B.

So, i tried to construct the data layout in R by the following commands :

  mat=matrix(0,nrow=2,ncol=2)

 for(i in 0:1){
   for(j in 0:1){
   mat[i,j] = c(i,j)
  # print(mat)
 }

}

I am realizing that the problem is within mat[i, j] = c(i, j) , particularly in c(i,j) .

i am not understanding how to handle it so that i would get the index of mat matrix as the element in that position of the matrix.

Answer 1

我觉得这就是你所需要的

expand.grid(FactorA = c("00", "10"), FactorB = c("00", "10"))