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Diag matlab3/30/2023 Update: I've been looking around the gallery() help and there is indeed an option for a Toeplitz pentadiagonal. k 0 represents the main diagonal, k > 0 above the main diagonal, and k < 0 below the main diagonal. Create diagonal matrix or get diagonals from symbolic matrices. Thread-Based Environment Run code in the background using MATLAB backgroundPool or accelerate code with Parallel Computing Toolbox ThreadPool. GPU Code Generation Generate CUDA code for NVIDIA GPUs using GPU Coder. Such matrix will have zero elsewhere and we sum such matrix to the previous one.Īnd such "chain reaction" goes on until the matrix is fully generated. Description X diag (v,k) when v is a vector of n components, returns a square matrix X of order n+abs (k), with the elements of v on the k th diagonal. This MATLAB function returns a square diagonal matrix with vector v as the main. Generate C and C++ code using MATLAB Coder. Similarly diag(-4*ones(n-1,1),1) will create a vector (length n-1) with all -4 and such vector will be placed in the 1st superdiagonal. In this code n=5 is the order of your matrix, then diag(6*ones(n,1),0) will create a vector (length n) with all 6 and such vector will be placed in the 0-th diagonal. Thus, R 0 n would be the corresponding Cartesian product (i.e. You can achieve this therefore by creating 5 different matrices, each of them will have a given non-zero diagonal: n=5 ī=diag(6*ones(n,1),0)+diag(-4*ones(n-1,1),1)+diag(-4*ones(n-1,1),-1)+diag(1*ones(n-2,1),2)+diag(1*ones(n-2,1),-2) One common way (among others) to specify the set of non-negative reals is R 0. You have to manually generate such matrix by means of the diag() function, which allows you to create a matrix with a given diagonal and you can as well select which diagonal you want to write. Since there are 5 non-zero diagonals this is not a tridiagonal matrix so you cannot use the tridiag option.
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