create cell array by extracting all the same row from multiple matrix

1 vue (au cours des 30 derniers jours)
I have three double A = [105x3]; B = [105x3]; C = [105x3]; I want to create a cell array D = {105 cells} each cells contains the corresponding rows from A B C.
For example,
D {1} = [
A(1,:);
B(1,:);
C(1,:);]
each row from A B C are in different rows in D
Is this achievable through cellfun?

Réponse acceptée

Stephen23
Stephen23 le 28 Sep 2022
"Is this achievable through cellfun?"
Yes:
A = rand(105,3);
B = rand(105,3);
C = rand(105,3);
D = cellfun(@vertcat,num2cell(A,2),num2cell(B,2),num2cell(C,2), 'uni',0)
D = 105×1 cell array
{3×3 double} {3×3 double} {3×3 double} {3×3 double} {3×3 double} {3×3 double} {3×3 double} {3×3 double} {3×3 double} {3×3 double} {3×3 double} {3×3 double} {3×3 double} {3×3 double} {3×3 double} {3×3 double}
But most likely you should be using ND arrays rather than concatenating & splitting data like that.
  2 commentaires
Katherine Zheng
Katherine Zheng le 28 Sep 2022
Hi @Stephen23 thank you very much. That's exactally what I want. But I am not sure I understand the 'using ND arrays' in your suggestion. Could you possibly explain a bit? Many thanks.
Stephen23
Stephen23 le 1 Oct 2022
"But I am not sure I understand the 'using ND arrays' in your suggestion."

Connectez-vous pour commenter.

Plus de réponses (1)

KSSV
KSSV le 28 Sep 2022
Modifié(e) : KSSV le 28 Sep 2022
D = cell(105,5) ;
for i = 1:105
D{i} = [A(i,:) B(i,:) C(i,:)] ;
end
Or
D = [A B C] ;
D = num2cell(D,2) ;
  2 commentaires
Katherine Zheng
Katherine Zheng le 28 Sep 2022
Hi @KSSV, is it possible to achieve through cellfun?
KSSV
KSSV le 28 Sep 2022
cellfun uses loop inside.....

Connectez-vous pour commenter.

Catégories

En savoir plus sur Matrix Indexing dans Help Center et File Exchange

Produits


Version

R2021a

Community Treasure Hunt

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

Start Hunting!

Translated by