Creating a "triangular" matrix

6 vues (au cours des 30 derniers jours)
Radhika Kulkarni
Radhika Kulkarni le 9 Fév 2021
Commenté : Walter Roberson le 9 Fév 2021
Hello,
I have a 17 x 75 matrix A, and have created a copy of the same matrix (B) for making changes. I want to manipulate this matrix by adding a column of 0's in between each column now. Furthermore, I want to shift the numbers in the ODD rows to the right by 1. In the end, I will have a "triangular" matrix. I have added a picture for visual reference.
Any help would be appreciated.
  2 commentaires
Walter Roberson
Walter Roberson le 9 Fév 2021
Numeric matrices can never have empty holes.
Radhika Kulkarni
Radhika Kulkarni le 9 Fév 2021
Can it be done if there are 0's in the empty cells?

Connectez-vous pour commenter.

Réponses (1)

Walter Roberson
Walter Roberson le 9 Fév 2021
B = reshape([A;zeros(size(A))], size(A, 1),[]);
B(1:2:end, 2:end) = B(1:2:end, 1:end-1) ;
  2 commentaires
Radhika Kulkarni
Radhika Kulkarni le 9 Fév 2021
Hi Walter, thank you for your quick response! May I know why the numbers repeat on the first and and second column for the ODD rows? Is there a way to have the first number be 0 so there aren't repeats?
Walter Roberson
Walter Roberson le 9 Fév 2021
Oh, right, I forgot to account for that.
B = reshape([A;zeros(size(A))], size(A, 1),[]);
B(1:2:end, 2:end) = B(1:2:end, 1:end-1);
B(1:2:end, 1) = 0;

Connectez-vous pour commenter.

Catégories

En savoir plus sur Creating and Concatenating Matrices dans Help Center et File Exchange

Community Treasure Hunt

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

Start Hunting!

Translated by