--- a
+++ b/@dataframe/numel.m
@@ -0,0 +1,41 @@
+function n = numel(df, varargin)
+  %# function resu = end(df, varargin)
+  %# This is the numel operator for a dataframe object, returning the
+  %# product of the  number of rows by the number of columns
+
+  %% Copyright (C) 2009-2010 Pascal Dupuis <Pascal.Dupuis@uclouvain.be>
+  %%
+  %% 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, 59 Temple Place -
+  %% Suite 330, Boston, MA 02111-1307, USA.
+  
+  %#
+  %# $Id: numel.m 981 2010-07-26 16:23:08Z dupuis $
+  %#
+
+if 1 == nargin,
+  n = prod(df._cnt([1 end]));
+else
+  error(print_usage());
+endif
+
+endfunction
+
+function usage = print_usage()
+  usage = strcat('Invalid call to numel.  Correct usage is: ', ' ', ...
+		  '-- Overloaded Function:  numel (A)');
+endfunction