1 ## Copyright (C) 2005 Michel D. Schmid <michaelschmid@users.sourceforge.net>
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)
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.
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/>.
19 ## @deftypefn {Function File} {} @var{a} = __dpurelin (@var{n})
20 ## @code{dpurelin}, first derivative of purelin
23 ## purelin is a linear transfer function used by neural networks
28 ## Author: Michel D. Schmid
30 function a = __dpurelin(n)
32 [nRows, nColumns] = size(n);
33 a = ones(nRows,nColumns);