Produce a matrix from pointwise outer product from vectors of different length

2 vues (au cours des 30 derniers jours)
I have 3 by 1 vectors
u, v1, v2, v3.
I also have a 1 by 9 vector
v = [v1' v2' v3']
concatenating the conjugate of vi.
How can I produce a 3 by 9 matrix w such that
w = [u*v1' u*v2' u*v3'];
where
u*v1', u*v2', and u*v3'
are all 3 by 3.
  2 commentaires
Walter Roberson
Walter Roberson le 27 Août 2016
You cannot. You have three sub-matrices each 3 x 3, for a total of 3 * 3 * 3 = 27 elements, but you want a 9 x 9 output matrix which calls for 9 * 9 = 81 elements. The content of the other 54 elements is not defined.
K.E.
K.E. le 27 Août 2016
Modifié(e) : K.E. le 27 Août 2016
@Walter Roberson oh sorry 3 by 9.

Connectez-vous pour commenter.

Réponse acceptée

Walter Roberson
Walter Roberson le 27 Août 2016
Modifié(e) : Walter Roberson le 27 Août 2016
u * v
would be the same as
u * [v1', v2', v3']
which would be the same as
[u * v1', u*v2', u*v3']
so just go ahead and use u * v

Plus de réponses (0)

Catégories

En savoir plus sur Logical dans Help Center et File Exchange

Produits

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by