Question

I can easily flatten an entire matrix into one row using reshape(M,1,[]). However, this time I want to flatten every n rows into one row. Thus, if we start with 100 rows and n=10, we will end up with 10 rows.

e.g.

1 2 3
4 5 6
7 8 9
10 11 12

with n=2 changes into

1 2 3 4 5 6
7 8 9 10 11 12

Is there a simple way to do this?

Answer 1

Suppose your original matrix is m, then:

reshape(m',[6 2])'

produces the required output. I’ll leave it to you to generalise to other cases; comment or post again if that causes you problems.