mm_io

mm_io, a C code which reads and writes files in the Matrix Market (MM) format.

Licensing:

The computer code and data files described and made available on this web page are distributed under the MIT license

Languages:

mm_io is available in a C version and a FORTRAN90 version and a MATLAB version.

Related Data and Programs:

CC_IO, a C code which reads and writes sparse linear systems stored in the Compressed Column (CC) format.

MM, a data directory which contains a description and examples of the Matrix Market format for storing matrices.

mm_io_test

SPARSE_DISPLAY, a C code which can read information defining a matrix of numbers and display the sparsity pattern or location of the nonzero elements using gnuplot. This operation is already available in the built-in MATLAB "spy" command.

ST_IO, a C code which reads and writes sparse linear systems stored in the Sparse Triplet (ST) format.

Reference:

1. Ronald Boisvert, Roldan Pozo, Karin Remington,
   The Matrix Market Exchange Formats: Initial Design,
   National Institute of Standards and Technology,
   NISTIR 5935, December 1996.
2. https://math.nist.gov/MatrixMarket/, the Matrix Market web site.

Source Code:

• mm_io.c, the source code.
• mm_io.sh, compiles the source code.
• mm_io.h, the include file.