% Welcome to SuiteSparse : a Suite of Sparse matrix packages, containing a % collection of sparse matrix packages authored or co-authored by Tim Davis. % Only the primary MATLAB functions are listed below. % % Example: % SuiteSparse_install % compiles and installs all of SuiteSparse, and runs several demos and tests. % %------------------------------------------------------------------------------- % Ordering methods and graph partitioners: %------------------------------------------------------------------------------- % % amd2 - approximate minimum degree ordering. % colamd2 - column approximate minimum degree ordering. % symamd2 - symmetrix approximate min degree ordering based on colamd. % camd - constrained amd. % ccolamd - constrained colamd. % csymamd - constrained symamd. % edgecut - Mongoose graph partitioner % %------------------------------------------------------------------------------- % CHOLMOD: a sparse supernodal Cholesky update/downdate package: %------------------------------------------------------------------------------- % % cholmod2 - computes x=A\b when A is symmetric and positive definite. % chol2 - same as MATLAB chol(sparse(A)), just faster. % lchol - computes an LL' factorization. % ldlchol - computes an LDL' factorization. % ldlupdate - updates an LDL' factorization. % resymbol - recomputes symbolic LL or LDL' factorization. % ldlsolve - solves Ax=b using an LDL' factorization. % ldlsplit - splits LD into L and D. % metis - interface to METIS node-nested-dissection. % nesdis - interface to CHOLMOD's nested-dissection (based on METIS). % septree - prune a separator tree. % bisect - interface to METIS' node bisector. % analyze - order and analyze using CHOLMOD. % etree2 - same as MATLAB "etree", just faster and more reliable. % sparse2 - same as MATLAB "sparse", just faster. % symbfact2 - same as MATLAB "symbfact", just faster and more reliable. % sdmult - same as MATLAB S*F or S'*F (S sparse, F full), just faster. % ldl_normest - compute error in LDL' factorization. % lu_normest - compute error in LU factorization. % mread - read a sparse matrix in Matrix Market format % mwrite - write a sparse matrix in Matrix Market format % spsym - determine the symmetry of a sparse matrix % %------------------------------------------------------------------------------- % CSPARSE / CXSPARSE: a Concise Sparse matrix package: %------------------------------------------------------------------------------- % % Matrices used in CSparse must in general be either sparse and real, or % dense vectors. Ordering methods can accept any sparse matrix. CXSparse % supports complex matrices and 64-bit MATLAB; it is installed by default. % % cs_add - sparse matrix addition. % cs_amd - approximate minimum degree ordering. % cs_chol - sparse Cholesky factorization. % cs_cholsol - solve A*x=b using a sparse Cholesky factorization. % cs_counts - column counts for sparse Cholesky factor L. % cs_dmperm - maximum matching or Dulmage-Mendelsohn permutation. % cs_dmsol - x=A\b using the coarse Dulmage-Mendelsohn decomposition. % cs_dmspy - plot the Dulmage-Mendelsohn decomposition of a matrix. % cs_droptol - remove small entries from a sparse matrix. % cs_esep - find an edge separator of a symmetric matrix A % cs_etree - elimination tree of A or A'*A. % cs_gaxpy - sparse matrix times vector. % cs_lsolve - solve a sparse lower triangular system L*x=b. % cs_ltsolve - solve a sparse upper triangular system L'*x=b. % cs_lu - sparse LU factorization, with fill-reducing ordering. % cs_lusol - solve Ax=b using LU factorization. % cs_make - compiles CSparse for use in MATLAB. % cs_multiply - sparse matrix multiply. % cs_nd - generalized nested dissection ordering. % cs_nsep - find a node separator of a symmetric matrix A. % cs_permute - permute a sparse matrix. % cs_print - print the contents of a sparse matrix. % cs_qr - sparse QR factorization. % cs_qleft - apply Householder vectors on the left. % cs_qright - apply Householder vectors on the right. % cs_qrsol - solve a sparse least-squares problem. % cs_randperm - random permutation. % cs_sep - convert an edge separator into a node separator. % cs_scc - strongly-connected components of a square sparse matrix. % cs_scc2 - cs_scc, or connected components of a bipartite graph. % cs_sparse - convert a triplet form into a sparse matrix. % cs_sqr - symbolic sparse QR factorization. % cs_symperm - symmetric permutation of a symmetric matrix. % cs_transpose - transpose a sparse matrix. % cs_updown - rank-1 update/downdate of a sparse Cholesky factorization. % cs_usolve - solve a sparse upper triangular system U*x=b. % cs_utsolve - solve a sparse lower triangular system U'*x=b. % cspy - plot a sparse matrix in color. % ccspy - plot the connected components of a matrix. % %------------------------------------------------------------------------------- % LDL: Sparse LDL factorization: %------------------------------------------------------------------------------- % % ldlsparse - LDL' factorization of a real, sparse, symmetric matrix. % ldlrow - an m-file description of the algorithm used by LDL. % %------------------------------------------------------------------------------- % UMFPACK: the Unsymmetric MultiFrontal Package: %------------------------------------------------------------------------------- % % umfpack2 - computes x=A\b, x=A/b, or lu (A) for a sparse matrix A % umfpack_details - details on all the options for using umfpack in MATLAB % umfpack_report - prints optional control settings and statistics % umfpack_btf - factorize A using a block triangular form % umfpack_solve - x = A\b or x = b/A % lu_normest - estimates norm (L*U-A,1) without forming L*U-A % (duplicate of CHOLMOD/lu_normest, for completeness) % luflop - given L and U, computes # of flops required % %------------------------------------------------------------------------------- % SuiteSparseQR: multifrontal rank-revealing sparse QR %------------------------------------------------------------------------------- % % spqr - sparse QR % spqr_solve - x=A\b using SuiteSparseQR % spqr_qmult - y=Q*x, Q'*x, x*Q, or x*Q' using Q in Householder form % %------------------------------------------------------------------------------- % GraphBLAS: graph algorithms via sparse linear algebra (graphblas.org) %------------------------------------------------------------------------------- % % GrB - the GraphBLAS matrix object; 100s of overloaded functions. % %------------------------------------------------------------------------------- % SPEX: solves sparse Ax=b exactly, with no roundoff error %------------------------------------------------------------------------------- % % SPEX_Left_LU_backslash - solve Ax=b via sparse left-looking % integer-preserving LU % %------------------------------------------------------------------------------- % Other packages: %------------------------------------------------------------------------------- % % MATLAB_Tools various MATLAB tools, most in M, some as C mexFunctions: % % ssmult sparse matrix times sparse matrix % meshnd nested dissection of regular 2D and 3D meshes % linfactor solve Ax=b using LU or CHOL % dimacs10 MATLAB interface for the DIMACS10 collection % factorize object-oriented system solver % sparseinv sparse inverse subset % spqr_rank toolbox for sparse rank-deficient matrices % % SuiteSparseCollection for managing the SuiteSparse Matrix Collection % RBio for reading/writing Rutherford/Boeing sparse matrices % ssget MATLAB interface to the SuiteSparse Matrix Collection % %------------------------------------------------------------------------------- % % For help on compiling SuiteSparse or the demos, testing functions, etc., % please see the help for each individual package. % % Copyright (c) 1995-2023, Timothy A. Davis, http://suitesparse.com. % See each package for its license. help SuiteSparse