How do you extract even columns and even rows from an nxn matrix?

How do you extract even columns and even rows from an nxn matrix?

I have a matrix of 2574 x 5148 and I only need the even columns and even rows.

Thanks!

Answer 1

[Walter Roberson]

YourMatrix(2:2:end, 2:2:end)

[Miguel L]

Walter I really appreciate your support!