ST_IO
Read and Write Sparse Triplet (ST) Matrix Files.

ST_IO is a MATLAB program which reads and writes files in the Sparse Triplet (ST) sparse matrix format.

Licensing:

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

Languages:

ST_IO is available in a FORTRAN90 version and a MATLAB version.

Related Data and Programs:

DSP_TO_ST, a FORTRAN90 program which converts a DSP sparse matrix file to ST format.

HB_TO_ST, a MATLAB program which converts a sparse matrix from Harwell-Boeing to sparse triplet format.

MM_TO_ST, a MATLAB program which reads the sparse matrix information from an MM Matrix Market file and writes a corresponding ST Sparse Triplet file.

MSM_TO_ST, a MATLAB program which writes a MATLAB sparse matrix to a ST Sparse Triplet file;

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

ST_TO_DSP, a FORTRAN90 program which converts an ST sparse matrix file to DSP format.

ST_TO_HB, a MATLAB program which converts a sparse matrix file from ST format to HB format (Harwell Boeing format);

ST_TO_MM, a MATLAB program which converts a sparse matrix file from ST format to MM format (Matrix Market format);

ST_TO_MSM, a MATLAB program which reads an ST sparse triplet file and creates a corresponding MATLAB Sparse Matrix.

Source Code:

• sort_heap_external.m, externally sorts a list of items into ascending order.
• st_data_print.m, prints the data in an ST file.
• st_data_print_some.m, prints some of the data in an ST file.
• st_data_read.m, reads the data of an ST file.
• st_data_write.m, writes the data of an ST file.
• st_header_print.m, prints the header of an ST file.
• st_header_read.m, reads the header of an ST file.
• st_header_write.m, writes the header of an ST file.
• st_rebase.m, changes the base of an index array.
• st_sort_a.m, sorts the entries of an ST matrix by column.
• timestamp.m, prints the current YMDHMS date as a time stamp.

Examples and Tests:

• st_io_test.m, calls all the tests.
• st_io_test01.m, tests ST_HEADER_WRITE and ST_DATA_WRITE.
• st_io_test02.m, tests ST_HEADER_READ, ST_DATA_READ.
• st_io_test03.m, tests ST_SORT_A.
• st_io_test_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.

You can go up one level to the MATLAB source codes.