Hi there,
I have a matrix similar as:
M <- matrix(c(2,2,rep(1,12), 2), nrow = 5,byrow = FALSE)
I hope to get the border subscript of the block with value 1. In the
above example, I hope to get:
(3,1), (5,1), (5,2), (4,2), (4,3), (1,3), (1,2), (3,2)
Is there any function can do that? or any implement idea? Thanks!
Best,
Jinsong
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