1## Copyright (C) 2005 Michel D. Schmid  <michaelschmid@users.sourceforge.net>
2##
3##
4## This program is free software; you can redistribute it and/or modify it
5## under the terms of the GNU General Public License as published by
6## the Free Software Foundation; either version 2, or (at your option)
7## any later version.
8##
9## This program is distributed in the hope that it will be useful, but
10## WITHOUT ANY WARRANTY; without even the implied warranty of
11## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12## General Public License for more details.
13##
14## You should have received a copy of the GNU General Public License
15## along with this program; see the file COPYING.  If not, see
16## <http://www.gnu.org/licenses/>.
17
18## -*- texinfo -*-
19## @deftypefn {Function File} {} @var{a} = __dpurelin (@var{n})
20## @code{dpurelin}, first derivative of purelin
21## @example
22##
23## purelin is a linear transfer function used by neural networks
24## @end example
25##
26## @end deftypefn
27
28## Author: Michel D. Schmid
29
30function a = __dpurelin(n)
31
32   [nRows, nColumns] = size(n);
33   a = ones(nRows,nColumns);
34
35endfunction