matlab - How to get a diagonal matrix from A vector - Stack …
Mar 9, 2011 · diag is the normal MATLAB solution (as pointed out by posdef.) Thus. D = diag(vec); gives you a matrix with diagonal elements as needed. Perhaps better in some …
How to assign values to a MATLAB matrix on the diagonal?
Suppose I have an NxN matrix A, an index vector V consisting of a subset of the numbers 1:N, and a value K, and I want to do this: for i = V A(i,i) = K end Is there a way to do this in one …
Obtaining opposite diagonal of a matrix in Matlab
Sep 16, 2013 · Diagonal matrix in matlab. Hot Network Questions In Canada's 2025 election, what have either Poilievre or ...
Creating diagonal matrix from array of matrices in MATLAB
Nov 15, 2016 · I am interested how to create a diagonal matrix from an array of matrices. I created an array of matrices in MATLAB: X<62x62x1000> it consists of 1000 matrices with …
MATLAB: Create a block diagonal matrix with same repeating block
May 4, 2013 · I have a matrix K of dimensions n x n. I want to create a new block diagonal matrix M of dimensions N x N, such that it contains d blocks of matrix K as its diagonal. I would have …
Diagonal matrix in matlab - Stack Overflow
Jul 18, 2016 · Keep in mind that you need u to be in the right length of the k diagonal you want, so if the final matrix is n*n, the k's diagonal will have only n-abs(k) elements. For you case: n = 5; …
In MATLAB, how to create diagonal with integers and zeros …
Mar 28, 2013 · You need to modify the entry of A for your function to return anything more than the zero matrix. You could use MATLAB's function diag which creates a diagonal matrix from a …
matlab - Easy way to generate a diagonal matrix from a vector?
Sep 9, 2015 · First question: I want to put the vector v on the diagonal of D, so that D(1,1) = 0, D(2,2) = 1, D(3,3) = 2, D(4,4) = 3 and D(5,5) = 4. I wrote a matlab code for this but I am sure …
Add a diagonal of zeros to a matrix in MATLAB - Stack Overflow
Dec 8, 2017 · If you want to insert any vector on a diagonal of a matrix, one can use plain indexing. The following snippet gives you the indices of the desired diagonal, given the size of …
MATLAB: creating matrix with multiple diagonals using diag ()
May 8, 2025 · Knowing that Matlab will set every other entry as 0, you can do something like. A=diag([7 3 1],2)+diag(2,4); in order to get . 0 0 7 0 2 0 0 0 3 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 In …