Dear R users,
I want to check matrices when i change the order of the rows or/and the order
of the columns or/and the combination of them
i will give an example what i want
1 -1 1 1 1 1 1 1
-1 -1 -1 -1 -1 -1 -1 -1
1 1 1 1 1 -1 1 1
these 2 matrices are identical because i change the first row and make it third
1 -1 1 1 -1 1 1 1
-1 -1 -1 -1 -1 -1 -1 -1
1 1 1 1 1 1 1 1
these 2 matrices are identical because i change the first 2 columns
1 -1 1 1 -1 -1 -1 -1
-1 -1 -1 -1 -1 1 1 1
1 1 1 1 1 1 1 1
these 2 matrices are identical because i change the first 2 columns and the
first two rows.
i wrote this two
combs.c <- combn(ncol(m1), 2)
nc <- ncol(combs.c)
ind.c <- vector("logical", nc)
for (i in 1:nc) {
m <- m1
m[, combs.c[, i]] <- m[, rev(combs.c[, i])]
ind.c[i] <- all(m == m2)
}
combs.r <- combn(nrow(m1), 2)
nr <- ncol(combs.r)
ind.r <- vector("logical", nr)
for (i in 1:nr) {
m <- m1
m[combs.r[, i], ] <- m[rev(combs.r[, i]), ]
ind.r[i] <- all(m == m2)
}
for the first two
but i cant make them work for the third
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