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sysreord.m
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1999-12-24
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2KB
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58 lines
## Copyright (C) 1996 Auburn University. All Rights Reserved
##
## This file is part of Octave.
##
## Octave 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, or (at your option) any
## later version.
##
## Octave 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 Octave; see the file COPYING. If not, write to the Free
## Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA.
## -*- texinfo -*-
## @deftypefn {Function File } { @var{pv} =} sysreord( @var{vlen}, @{var{list})
##
## @strong{Inputs}
## @var{vlen}=vector length, @var{list}= a subset of @code{[1:vlen]},
##
## @strong{Outputs}
## @var{pv}: a permutation vector to order elements of @code{[1:vlen]} in
## @code{list} to the end of a vector.
##
## Used internally by @code{syscnct} to permute vector elements to their
## desired locations.
## @end deftypefn
function pv = sysreord (vlen, list)
## A. S. Hodel, Aug 1995
## disp('sysreord: entry')
pv = 1:vlen;
## make it a row vector
list = reshape(list,1,length(list));
A = pv'*ones(size(list));
B = ones(size(pv'))*list;
X = (A != B);
if(!is_vec(X))
y = min(X');
else
y = X';
endif
z = find(y == 1);
if(!isempty(z))
pv = [z, list];
else
pv = list;
endif
endfunction