home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
OS/2 Shareware BBS: 10 Tools
/
10-Tools.zip
/
octa21eb.zip
/
octave
/
SCRIPTS.ZIP
/
scripts
/
general
/
is_duplicate_entry.m
< prev
next >
Wrap
Text File
|
1998-11-05
|
1KB
|
45 lines
## Copyright (C) 1996, 1997 A. S. Hodel <scotte@eng.auburn.edu>
##
## 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
## 02111-1307, USA.
## Usage: is_duplicate_entry (x)
##
## Return non-zero if any entries in x are duplicates of one another.
## Author: A. S. Hodel <scotte@eng.auburn.edu>
function retval = is_duplicate_entry (x)
if (nargin == 1)
if (is_matrix (x))
[m, n] = size (x);
lx = m*n;
lx1 = lx-1;
x = sort (reshape (x, 1, lx));
dx = x(1:lx1) - x(2:lx);
retval = sum (dx == 0);
else
error ("is_duplicate_entry: expecting matrix argument");
endif
else
usage ("is_duplicate_entry (x)");
endif
endfunction