mm_read1 mm_read_info mm_write1 readgmsh22 writegmsh22 writevtkug

mm_read1() def mm_read1 ( fname  , val  , rowptr  , colind  , base  = 0, sort  = 0  ) Read a matrix from the Matrix Market file Purpose This function reads real sparse matrix from the Matrix Market file, and stores in CSR format. Returns (info, nrow, ncol) info (int): = 0: Successful exit. = i < 0: The (-i)-th argument is invalid. = 1: Failed to open file. = 3: File read error. = 4: Invalid type. = 5: Not real sparse matrix file. nrow (int): Number of rows of the matrix. ncol (int): Number of columns of the matrix. Parameters [in] fname Input file name. [out] val Numpy ndarray (1-dimensional, float, nnz) Values of nonzero elements of sparse matrix (where nnz is the number of nonzero elements). [out] rowptr Numpy ndarray (1-dimensional, int32, nrow + 1) Row pointers of sparse matrix. [out] colind Numpy ndarray (1-dimensional, int32, nnz) Column indices of sparse matrix (where nnz is the number of nonzero elements). [in] base (Optional) Indexing of rowptr and colind. (default = 0) = 0: Zero-based (C style) indexing: Starting index is 0. = 1: One-based (Fortran style) indexing: Starting index is 1. [in] sort (Optional) Specify whether to sort elements of sparse matrix in ascending order of column number within each row. (default = 0) = 0: Do not sort elements. = 1: Sort elements.