jburkardt

ST_IO\ Read and Write Sparse Triplet (ST) Matrix Files. {#st_io-read-and-write-sparse-triplet-st-matrix-files. align=”center”} ================================================

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ST_IO is a C++ library which reads and writes files in the Sparse Triplet (ST) format used for storing sparse matrices.

Licensing: {#licensing align=”center”}

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

Languages: {#languages align=”center”}

ST_IO is available in a C version and a C++ version and a FORTRAN90 version and a FORTRAN77 version and a MATLAB version.

Related Data and Programs: {#related-data-and-programs align=”center”}

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

CC_TO_ST, a C++ library which converts a sparse matrix from compressed column (CC) to sparse triple (ST) format.

HB_IO, a C++ library which reads and writes sparse linear systems stored in the Harwell Boeing (HB) format for sparse matrices.

ST, the format which is used for the input to this program.

ST_TO_CC, a C++ library which converts sparse matrix data from Sparse Triplet (ST) format to Compressed Column (CC) format.

Source Code: {#source-code align=”center”}

• st_io.cpp, the source code.
• st_io.hpp, the include file.

Examples and Tests: {#examples-and-tests align=”center”}

• st_io_prb.cpp, a sample calling program.
• st_io_prb_output.txt, the output file.
• a5by5.st, an ST file storing a 5 by 5 matrix.
• kershaw.st, an ST file storing a 4 by 4 matrix.

List of Routines: {#list-of-routines align=”center”}

• SORT_HEAP_EXTERNAL externally sorts a list of items into ascending order.
• ST_DATA_PRINT prints the data in an ST file.
• ST_DATA_PRINT_SOME prints some of the data in an ST file.
• ST_DATA_READ reads the data of an ST file.
• ST_DATA_WRITE writes the data of an ST file.
• ST_HEADER_PRINT prints the header of an ST file.
• ST_HEADER_READ reads the header of an ST file.
• ST_HEADER_WRITE writes the header of an ST file.
• ST_REBASE changes the base of an index array.
• ST_SORT_A sorts the entries of an ST matrix by column.
• ST_TRANSPOSE transposes an ST matrix.
• TIMESTAMP prints the current YMDHMS date as a time stamp.

You can go up one level to the C++ source codes.

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Last revised on 20 July 2014.