Last chance! 50% off unlimited learning
Sale ends in
aperm(a, perm, ...)
"aperm"(a, perm = NULL, resize = TRUE, ...)
"aperm"(a, perm = NULL, resize = TRUE, keep.class = TRUE, ...)1:n, where n is the number of dimensions
of a. When a has named dimnames, it can be a
character vector of length n giving a permutation of those
names. The default (used whenever perm has zero length) is to
reverse the order of the dimensions.TRUE).a.a, with subscripts permuted as
indicated by the array perm. If resize is TRUE,
the array is reshaped as well as having its elements permuted, the
dimnames are also permuted; if resize = FALSE then the
returned object has the same dimensions as a, and the dimnames
are dropped. In each case other attributes are copied from a.The function t provides a faster and more convenient way of
transposing matrices.
t, to transpose matrices.
# interchange the first two subscripts on a 3-way array x
x <- array(1:24, 2:4)
xt <- aperm(x, c(2,1,3))
stopifnot(t(xt[,,2]) == x[,,2],
t(xt[,,3]) == x[,,3],
t(xt[,,4]) == x[,,4])
UCB <- aperm(UCBAdmissions, c(2,1,3))
UCB[1,,]
summary(UCB) # UCB is still a continency table
Run the code above in your browser using DataLab