How do I turn a vector into a specific matrix in MATLAB (example in post) I'm currently wracking my brains on how to solve this specific situation:
I have a (20x1) vector  that looks like:
$$
H' = \begin{matrix}1&2&3&4&5& \dots & 19 & 20 
\end{matrix}
$$
I wish to turn it or reshape it into  a (4x5) matrix that looks exactly like this:
$$
H_{\mathrm{new}} = \begin{matrix}
1 & 2 & 3 & 4 & 5 \\ 
6 & 7 & 8 & 9 & 10\\
11 & 12 & 13 & 14 & 15\\
16 & 17 & 18 & 19 & 20\\
\end{matrix}
$$
I have tried using the reshape() function, but it doesn't seem to be working the way I want it to. Is there a set of nested for loops I could use or some different functions to use?
Thank you!

The reshape() function fills out the matrix by column. You could build your own nested for loops, but you could also use transpose() cleverly:
H_new = reshape(H, [5,4])’
Note that the dimensions are swapped and the ’ is syntactic sugar for transpose().
