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## Copyright (C) 1996, 1997 Kurt Hornik
##
## This program 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.
##
## This program 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 this file. If not, write to the Free Software Foundation,
## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
## usage: empirical_pdf (X, DATA)
##
## For each element of X, compute the probability density function (PDF)
## at X of the empirical distribution obtained from the univariate
## sample DATA.
## Author: KH <Kurt.Hornik@ci.tuwien.ac.at>
## Description: PDF of the empirical distribution
function pdf = empirical_pdf (X, DATA)
if (! is_vector (DATA))
error ("empirical_pdf: DATA must be a vector");
endif
pdf = discrete_pdf (X, DATA, ones (size (DATA)) / length (DATA));
endfunction
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