0 링크 번역 답변:James Tursa2014년 6월 5일 MATLAB Online에서 열기 How to optimize this diagonal matrix using sparse : a=diag([-ones(9,1)],-1)+diag([ones(10,1)])+diag([0 ones(1,4) 0],4) 댓글
Apply Exponential Function to Sparse Matrix Copy Code Copy Command Create a 4-by-4 sparse diagonal matrix. Get S = diag(sparse(1:4)) S = 4×4 sparse double matrix (4 nonzeros) (1,1) 1 (2,2) 2 (3,3) 3 (4,4) 4 Apply the exponential function to the nonzero elements of...
Suppose I want to calculate something like A*(Kron(B,eye(n))), where A is a large diagonal matrix whose main diagonal is also sparse. Is there a way to calculate this quickly? 채택된 답변 Matt J2022년 12월 23일
This MATLAB function creates a sparse matrix that has the same sparsity pattern as the matrix S, but with uniformly distributed random entries.
This MATLAB function extracts the nonzero diagonals from m-by-n matrix A and returns them as the columns in min(m,n)-by-p matrix Bout, where p is the number of nonzero diagonals.
Thus B = sparse(A) converts the matrix A to sparse form and assigns it to B and Matlab operations on B will take account of this sparsity. If we wish to return this matrix to full form, we simply use C = full(B). However, the sparse function can also be used directly to ...
UselinearizeInput(Partial Differential Equation Toolbox)to specify the inputs of the linearized model in terms of boundary conditions, loads, or internal heat sources in the PDE model. UselinearizeOutput(Partial Differential Equation Toolbox)to specify the outputs of the linearized model in terms ...
For a matrix A with n=3 columns and containing nnz=4 nonzero elements, MATLAB uses the following representation: A=[010203400] This storage scheme needs n+1 integers for the column pointers, nnz integers for the row indices, and nnz real numbers for the matrix elements. An integer number...
We present a matrix language compiler CMC which translates annotated MATLAB scripts into Fortran 90 programs. Distinguishing features of CMC include its applicability to programs with sparse matrix computations and its capability of source-level optimiza
我在matlab中有(实际上A是一个巨大的稀疏矩阵,大约30k*30k )。)SparseMatrix < double >A,A1, A2,A3; igl::slice(A, b, 1,A2); 浏览7提问于2022-07-21得票数 0 0回答 如何将两个Eigen::DiagonalMatrix相乘并将结果ad为Eigen::SparseMatrix? 、、、 我正在尝试写一个线性系统的求解器,来自Matla...