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+++ b/scripts/statistics/distributions/unidpdf.m
@@ -0,0 +1,40 @@
+## Copyright (C) 2007  David Bateman
+##
+## 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+## 02110-1301, USA.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} unidpdf (@var{x}, @var{v})
+## For each element of @var{x}, compute the probability density function
+## (pDF) at @var{x} of a univariate discrete distribution which assumes
+## the values in @var{v} with equal probability.
+## @end deftypefn
+
+function pdf = unidpdf (x, v)
+
+  if (nargin != 2)
+    print_usage ();
+  endif
+
+  if (isscalar(v))
+    v = [1:v].';
+  else
+    v = v(:);
+  endif
+
+  pdf = discrete_pdf (x, v, ones(size(v)));
+endfunction