function c = demean(x)

% Removes the mean of each column of a matrix.
%
% INPUTS
% - x    [double]   T*N matrix of data.
%
% OUTPUTS
% - c    [double]   T*N matrix of demeaned data.

% Copyright (C) 2011-2018 Dynare Team
%
% This file is part of Dynare.
%
% Dynare 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.
%
% Dynare 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 Dynare.  If not, see <http://www.gnu.org/licenses/>.

if ndim(x)>2
    error('This function is not implemented for arrays with dimension greater than two!')
end

c = bsxfun(@minus, x, nanmean(x));