Dear Dr. Vokey,
Here is one approach, although may not be the more efficient:
x <- matrix(1:8, ncol = 4)
x
# [,1] [,2] [,3] [,4]
#[1,]1357
#[2,]2468
t(x[, ncol(x):1])
# [,1] [,2]
#[1,]78
#[2,]56
#[3,]34
#[4,]12
leftTranspos
useRs,
I frequently require the following transform of a matrix that I call a
leftTranspose:
-- transposes x such that the last items of each row become
-- the first items in each column. E.g.,
-- a b c d
-- e f g h
-- becomes:
-- d h
-- c g
-- b f
-- a e
because i
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