Varimax rotation is a change of coordinates used in principal component analysis and factor analysis that maximizes the sum of the variances of the squared loadings matrix. This module exports a single routine 'rotate'. This routine is called in LIST context and accepts a LIST-of-LISTS (LoL) corresponding to the loadings matrix of a factor analysis and returns two references to LoLs. The first is a LoL of the rotated loadings and the seconds is a LoL of the orthogonal matrix. See http://en.wikipedia.org/wiki/Varimax_rotation.
INSTALLATION
To install this module, run the following commands:
perl Makefile.PL make make test make install
Alternatively, to install with Module::Build, you can use the following commands:
perl Build.PL ./Build ./Build test ./Build install
DEPENDENCIES
'Carp' => '1.08', 'Math::GSL::Linalg::SVD' => '0.0.2', 'Math::MatrixReal' => '2.05', 'List::Util' => '1.22',
COPYRIGHT AND LICENCE
Copyright (C) 2009, Daniel S. T. Hughes
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
To install Statistics::PCA::Varimax, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Statistics::PCA::Varimax
CPAN shell
perl -MCPAN -e shell install Statistics::PCA::Varimax
For more information on module installation, please visit the detailed CPAN module installation guide.