How do I make a matrix of vectors?

[stevengj]

@phma

the second element is not the expected 2×2 matrix of 40-element vectors but an 80×2 matrix of 255-element vectors (two 40-element vectors have been concatenated). How do I prevent concatenation and get a 2×2 matrix of vectors?

You can do

reshape([a,b,c,d], 2,2)

to get a 2×2 matrix of vectors, if a,b,c,d are vectors.