HB_TO_ST is a FORTRAN77 program which reads the definition of a sparse matrix from a file in Harwell-Boeing (HB) format, and writes the information into a Sparse Triplet (ST) file.
hb_to_st hb.file st.filewhere
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
HB_TO_ST is available in a FORTRAN77 version and a FORTRAN90 version and a MATLAB version.
DLAP_IO, a FORTRAN77 library which reads and writes DLAP sparse matrix files;
DSP_TO_ST, a FORTRAN90 program which converts a sparse matrix file from DSP format (one-based indices) to ST format (zero-based indices);
HB, a data directory which contains examples of HB files, the Harwell Boeing sparse matrix file format;
HB_IO, a FORTRAN90 library which reads and writes sparse linear systems stored in the Harwell-Boeing Sparse Matrix format.
HB_READ, a FORTRAN77 library which reads files in the Harwell Boeing (HB) sparse matrix format; This is a simplified interface intended to handle only the most common format, complex unsymmetric assembled (CUA) or real unsymmetric assembled (RUA).
HBSMC, a dataset directory which contains the Harwell Boeing Sparse Matrix Collection;
MM_IO, a FORTRAN90 library which reads and writes sparse linear systems stored in the Matrix Market format.
SPARSEKIT, a FORTRAN90 library which carries out operations on sparse matrices, by Yousef Saad.
SPARSEPAK, a FORTRAN90 library which forms an obsolete version of the Waterloo Sparse Matrix Package.
ST, a data directory of examples of ST files, the Sparse Triplet format, a sparse matrix file format, storing just (I,J,A(I,J)), and using zero-based indexing.
ST_IO, a FORTRAN77 library which reads and writes sparse linear systems stored in the ST "sparse triplet" Sparse Matrix format.
ST_TO_DSP, a FORTRAN90 program which converts a sparse matrix file from ST format (zero-based indices) to DSP format (one-based indices);
5BY5 is a simple 5 by 5 matrix:
1.1 0.0 0.0 1.4 0.0 0.0 2.2 0.0 0.0 0.0 3.1 3.2 3.3 3.4 3.5 0.0 0.0 0.0 4.4 4.5 5.1 5.2 0.0 0.0 5.5
KERSHAW is a simple 4 by 4 matrix:
3 -2 0 2 -2 3 -2 0 0 -2 3 -2 2 0 -2 3
You can go up one level to the FORTRAN77 source codes.