Sub-Matrices in a bigger matrix
6 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
Rengin
el 19 de Jul. de 2019
Dear Users,
Imagine that I have 4 square matrices such as A11, B11, C11 and D22.
I want to insert them as diagonal elements of a bigger matrix (please see the pic on the attchments).
However, I don't know the size of the bigger matrix. I will find it out when I insert all sub-matrices. Is there any easy way to do it?
Thanks in advance!
0 comentarios
Respuesta aceptada
madhan ravi
el 19 de Jul. de 2019
blkdiag(A11, B11, C11, D22)
2 comentarios
madhan ravi
el 19 de Jul. de 2019
m = size(A11,1);
Wanted = blkdiag(A11, B11, C22, D22);
Wanted(1:m,m+1:end) = [A12,A13,A14];
Wanted(m+1:m*2,1:m) = B21
Más respuestas (1)
Andrei Bobrov
el 19 de Jul. de 2019
For matrices with the same size. Let [m,n] - size of each matrix, q - number of matrices in the vertical of a large matrix:
M = cat(3,A11,B21,..,A12,B11,..,A13,..,C11,..D22);% A11, B21 and etc - your small matrices
out = reshape(permute(reshape(M,m,n,q,[]),[1,3,2,4]),q*m,[]);
0 comentarios
Ver también
Categorías
Más información sobre Matrix Indexing 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!