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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