This MATLAB function returns a square diagonal matrix with vector v as the main diagonal. your operation and pass the result back. The diag function returns the diagonal elements of a matrix (or returns a diagonal matrix when passed a vector). diag is the normal MATLAB solution (as pointed out by posdef.) Thus D = diag( vec);. gives you a matrix with diagonal elements as needed.

by typing zeros(1,5) or a column vector of zeros The 3rd row of a matrix can be seen in MATLAB The main diagonal may be extracted (as a vector) us-. Extract and create sparse band and diagonal matrices [B,d] = spdiags(A) returns a vector d of length p, whose integer components specify the diagonals in A. This MATLAB function returns a square diagonal matrix with the elements of vector v on the main diagonal. diag. Diagonal matrices and diagonals of a matrix. Syntax. X = diag(v,k) X = diag( v) v = diag(X,k) v = diag(X). Description. X = diag(v,k) when v is a vector of n. diag is the normal MATLAB solution (as pointed out by posdef.) Thus D = diag( vec);. gives you a matrix with diagonal elements as needed. This MATLAB function returns a square diagonal matrix with vector v as the main diagonal. You can flatten out your input matrix into a column vector using (:) indexing and then pass it to diag to place these elements along the diagonal of a new matrix. your operation and pass the result back. The diag function returns the diagonal elements of a matrix (or returns a diagonal matrix when passed a vector). Use blkdiag on a comma-separated list generated from the cell array: result = blkdiag(B{:});. For example, with. B = {sparse([1 0 0; 2 2 0; 3 3 3]), 4*speye(2)};.

It has no analogues?