title: R: initialize m by n matrices in an empty list
body: <p>I want to initialize an empty list that stores 10 2x5 matrices. I've looked at <a href="https://stackoverflow.com/questions/14284676/initialize-a-list-of-matrices-in-r">this</a> post here, and it seems like <code>replication(10, diag(2), simplify = F)</code> only returns a list of 10 empty 2x2 matrices. What if my matrix is not nxn? How can I account for that?</p>