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% STK_COMMONSIZE ...
%
% TODO: describe differences with Octave's common_size function.
% Copyright Notice
%
% Copyright (C) 2015 CentraleSupelec
% Copyright (C) 2013, 2014 SUPELEC
%
% Author: Julien Bect <julien.bect@centralesupelec.fr>
% Copying Permission Statement
%
% This file is part of
%
% STK: a Small (Matlab/Octave) Toolbox for Kriging
% (https://github.com/stk-kriging/stk/)
%
% STK 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 of the License, or (at your
% option) any later version.
%
% STK 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 STK. If not, see <http://www.gnu.org/licenses/>.
function varargout = stk_commonsize (varargin)
n = length (varargin);
if n == 0,
varargout = {};
else
if n == 1
% varargin{1} is expected to be a cell array in this case
C = varargin{1};
n = length (C);
else
C = varargin;
end
d = cellfun (@ndims, C);
s = ones (n, max (d));
for i = 1:n,
s(i, 1:d(i)) = size (C{i});
end
smax = max (s);
% Take care of empty dimensions, if any
b = (smax > 0);
smax = smax (b);
s = s(:, b);
nrep = ones (size (smax));
for i = 1:n,
nrep(b) = smax ./ s(i, :);
nrep_one = (nrep == 1);
if ~ all ((s(i, :) == 1) | nrep_one)
error ('Input arguments cannot be brought to a common size.');
elseif ~ all (nrep_one)
C{i} = repmat (C{i}, nrep);
end
end
if nargout > 1,
varargout = C(1:nargout);
else
varargout = {C};
end
end
end % function
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