R: Matrix Transpose

Matrix Transpose

t(x)

Given a matrix or data.frame x, t returns the transpose (matrix or data.frame) of x.

a <- matrix(1:30, 5,6)
ta <- t(a) ##-- i.e.,  a[i,j] == ta[j,i] for all i,j :
for(j in seq(ncol(a)))
  if(! a[,j] == ta[j,]) stop("wrong transpose")