Finding the diagonal vector from a square matrix
1 visualización (últimos 30 días)
Mostrar comentarios más antiguos
Hi
I'm trying to find the diagonal of an square matrix but NOT the diagonal vector of the matrix from left to right. I'm trying to find the diagonal of an matrix fram right to left. Below is an example of what I'm trying to achieve:
A = [2 9 4; 4 9 2; 1 5 0];
diagA = diag(A); %Diagonal of the A matrix from left to right
%THE ANSWER: digA = [2 9 0]'
But what I'm trying to get is the diagonal from the A matrix from right to left for [4 9 1]
Is this possible? Can you please help me?
0 comentarios
Respuesta aceptada
Azzi Abdelmalek
el 20 de Sept. de 2012
Editada: Azzi Abdelmalek
el 20 de Sept. de 2012
A = [2 9 4; 4 9 2; 1 5 0]
fliplr(diag(flipud(A))')
4 comentarios
Matt Fig
el 21 de Sept. de 2012
Also, for any square matrix with N rows:
A(N:N-1:N^2-1)
Más respuestas (0)
Ver también
Categorías
Más información sobre Operating on Diagonal Matrices en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!