--- a
+++ b/@dataframe/size.m
@@ -0,0 +1,60 @@
+function [nrow, ncol] = size(df, varargin)
+  %# function resu = end(df, varargin)
+  %# This is size operator for a dataframe object.
+
+  %% 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: size.m 852 2010-07-22 10:47:55Z dupuis $
+  %#
+
+  switch nargin
+    case 1
+      switch nargout
+	case {0 1}
+	  nrow = df._cnt;
+	case {2}
+	  nrow = df._cnt(1); ncol = df._cnt(2);
+	otherwise
+	  error(print_usage());
+      endswitch
+    case 2
+      switch nargout
+	case {0 1}
+	  nrow = df._cnt;
+	  try
+	    nrow = nrow(varargin{1});
+	  catch
+	    error(print_usage());
+	  end_try_catch
+	otherwise
+	  error(print_usage());
+      endswitch
+    otherwise
+      error(print_usage());
+  endswitch
+
+endfunction
+
+function usage = print_usage()
+  usage = strcat('Invalid call to size.  Correct usage is: ', ' ', ...
+		  '-- Overloaded Function:  size (A, N)');
+endfunction