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function varargout = size(df, varargin)
%# function resu = size(df, varargin)
%# This is size operator for a dataframe object.
%% Copyright (C) 2009-2017 Pascal Dupuis <cdemills@gmail.com>
%%
%% This file is part of the dataframe package for Octave.
%%
%% This package 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, or (at your option) any later version.
%%
%% This package 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 package; see the file COPYING. If not,
%% see <http://www.gnu.org/licenses/>.
switch nargin
case 1
switch nargout
case {0, 1}
varargout{1} = df.x_cnt;
case {2}
varargout{1} = df.x_cnt(1);
if (1 == df.x_cnt(2) && length (df.x_cnt) > 2)
varargout{2} = df.x_cnt(3);
else
varargout{2} = df.x_cnt(2);
end
case {3}
varargout = {df.x_cnt(1) df.x_cnt(2)};
if (2 == length (df.x_cnt))
varargout{3} = 1;
else
varargout{3} = df.x_cnt(3);
end
otherwise
error (print_usage ());
end
case 2
switch nargout
case {0 1}
varargout{1} = df.x_cnt;
try
varargout{1} = varargout{1}(varargin{1});
catch
error (print_usage ());
end
otherwise
error (print_usage ());
end
case 3
switch nargout
case {0 1}
if (length (df.x_cnt) < 3),
varargout{1} = 1;
else
varargout{1} = df.x_cnt;
end
try
varargout{1} = varargout{1}(varargin{1});
catch
error (print_usage ());
end
otherwise
error (print_usage ());
end
otherwise
error (print_usage ());
end
end
function usage = print_usage()
usage = strcat ('Invalid call to size. Correct usage is: ', ' ', ...
'-- Overloaded Function: size (A, N)');
end
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