Please note that the recommended version of Scilab is 2024.1.0. This page might be outdated.
See the recommended documentation of this function
ReadHBSparse
read a Harwell-Boeing sparse format file
Syntax
[A, description, ref, mtype] = ReadHBSparse([filename])
Arguments
- filename
(optional) a string given the filename (eventually preceding by the path), if filename is not given then the function use uigetfile to get filename interactively
- A
the sparse matrix
- description
a string given some information about the matrix
- ref
a string given the reference of the matrix
- mtype
a string given the type of the matrix
Description
An utility to read the Harwell-Boeing sparse matrix format. Currently do not work for unassembled matrix. Also the eventual rhs vectors of the file are not returned. Generally the file name is of the form ref.mtype where mtype is a 3 letters word abc given some information (already inside the file) on the matrix :
References
Users' Guide for the Harwell-Boeing Sparse Matrix Collection Iain S. Duff, Roger G. Grimes, John G. Lewis. You may found this guide and numerous sparse matrices (in the Harwell-Boeing format) at the University of Florida Sparse Matrix Collection
web site : http://www.cise.ufl.edu/research/sparse/matrices/
maintained by Tim Davis (http://www.cise.ufl.edu/~davis/)
Examples
[A] = ReadHBSparse(SCI+"/modules/umfpack/demos/arc130.rua");
See also
- PlotSparse — plot the pattern of non nul elements of a sparse matrix
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