view scripts/statistics/distributions/unidpdf.m @ 12749:e7cc2d4a6db3 stable

Fix range of sigma in normal distribution to exclude 0. * normcdf.m, normpdf.m: Correct 's >= 0' to 's > 0'.
author Rik <octave@nomad.inbox5.com>
date Thu, 16 Jun 2011 21:05:10 -0700
parents 4675ce154a55
children 19b9f17d22af
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## Copyright (C) 2007-2011 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 3 of the License, 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, see
## <http://www.gnu.org/licenses/>.

## -*- 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 discrete uniform distribution which assumes
## the values in @var{v} with equal probability.
## If @var{v} is a scalar then @code{1/@var{v}} is the probability of a
## single element.
## @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