DLAP_IO
DLAP Sparse Matrix Files
Read and Write Utilities

DLAP_IO, a MATLAB library which reads and writes files in the DLAP sparse matrix format, used by DLAP, the Sparse Linear Algebra Package.

Licensing:

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

Languages:

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

Related Data and Programs:

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

dlap_io_test

HB_IO, a MATLAB library which reads and writes sparse linear systems stored in the Harwell-Boeing Sparse Matrix format.

MM_IO, a MATLAB library which reads and writes sparse linear systems stored in the Matrix Market format.

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

Reference:

1. Iain Duff, Roger Grimes, John Lewis,
   User's Guide for the Harwell-Boeing Sparse Matrix Collection,
   October 1992.

Source Code:

• dlap_file_print.m prints a DLAP linear system that was stored in a file.
• dlap_file_read.m reads in a DLAP matrix contained in a file.
• dlap_file_write.m writes out a DLAP Triad Format Linear System.
• dlap_header_print.m prints the header line of a DLAP file.
• dlap_header_read.m reads the header line from a DLAP file.
• dlap_header_write.m writes the header line to a DLAP file.
• dlap_rhs_print.m prints the right hand side vector from a DLAP file.
• dlap_rhs_read.m reads the right hand side vector from a DLAP file.
• dlap_rhs_write.m writes a right hand side vector to a DLAP file.
• dlap_soln_print.m prints the solution vector from a DLAP file.
• dlap_soln_read.m reads the solution vector from a DLAP file.
• dlap_soln_write.m writes a solution vector to a DLAP file.
• r8sp_print.m prints an R8SP matrix.
• r8sp_print_some.m prints some of an R8SP matrix.
• r8vec_print.m prints an R8VEC.
• r8vec_print_some.m prints "some" of an R8VEC.
• timestamp.m prints the current YMDHMS date as a time stamp.