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NAME

svdpackout.pl - Reconstruct post-SVD form of matrix from singular values output by SVDPACKC

SYNOPSIS

 svdpackout.pl [OPTIONS] lav2 lao2

Type svdpackout.pl --help for a quick summary of options

DESCRIPTION

Reconstructs a matrix from its singular values and singular vectors created by SVDPACKC. The result of this is essentially a "smoothed" matrix equal in size to the original pre-SVDPACKC matrix, but where the non-significant dimenions have been removed.

INPUT

Required Arguments:

lav2

Binary output file created by SVDPACKC's las2

lao2

ASCII output file created by SVDPACKC's las2

Optional Arguments:

--rowonly

Only the row vectors are reconstructed. By default, svdpackout reconstructs entire matrix.

--format FORM

Specifies numeric format for representing output matrix values. The following formats are supported with --format :

fM.N - Output matrix will contain real values each occupying total M spaces of which last N digits show fractional part. M spaces for each entry include the decimal point and +/- sign if any. =back

Default format value is f16.10.

Other Options :

--help

Displays this message.

--version

Displays the version information.

OUTPUT

svdpackout.pl displays a matrix reconstructed from the Singular Triplets created by SVDPACKC. By default, entire matrix (product of left and right signular vectors and singular values) is reconstructed. When --rowonly is ON, only the reduced row vectors are built.

SYSTEM REQUIREMENTS

SVDPACKC - http://netlib.org/svdpack/ (also available in /External)
PDL - http://search.cpan.org/dist/PDL/

AUTHORS

 Amruta Purandare, University of Pittsburgh

 Ted Pedersen, University of Minnesota, Duluth
 tpederse at d.umn.edu

COPYRIGHT

Copyright (c) 2002-2008, Amruta Purandare and Ted Pedersen

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to

 The Free Software Foundation, Inc.,
 59 Temple Place - Suite 330,
 Boston, MA  02111-1307, USA.

2 POD Errors

The following errors were encountered while parsing the POD:

Around line 43:

=over should be: '=over' or '=over positive_number'

Around line 51:

You forgot a '=back' before '=head3'