Creating a non-symmetric matrix of 1s with non-symmetric diagonal of 0s in R

Question

EDITED:

I would like to efficiently create a 1452 x 44 matrix, where:

• the first column has 33 zeroes followed by 1419 ones
• the second column has 33 ones, then 33 zeroes, then 1386 ones ...
• the thirty third column as 1419 ones followed by 33 zeroes

How can I do this in R? Many thanks in advance!

Answer 1

After edits, moving my comment to an answer:

x1 = 44
x2 = 1452
m = matrix(c(rep(rep(0:1, c(x1, x2)), x2 / x1 - 1), rep(0, x1)),
           ncol = x2 / x1) 

Essentially, you want a pattern of 44 0s then 1452 1s repeated a bunch. We stick on the last set of 44 0s so it ends on 0 and set the dimensions accordingly.