I want to overwrite some specific border lines in Matlab, can anyone help ?

Hello!

I have a situation like this:

And, I want to use the encircled lines for padding so that I can obtain a new situation that looks like this:

Can anyone help me to write a Matlab code that can do this ?

Thank you!

Answer 1

[Gobert]

A = magic(4)

B = circshift(A,[1 1])

C = padarray(B(2:end,2:end),[1 1],'replicate','pre')