Added new method (center).

parent 2742aa19
function o = center(o, geometric) % --*-- Unitary tests --*--
% Centers @dseries object o around its mean (arithmetic or geometric).
%
% INPUTS
% o o dseries object [mandatory].
% o geometric logical [default is false], if true returns the geometric mean.
%
% OUTPUTS
% o o o
% Copyright (C) 2016 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 nargin<2
geometric = false;
end
if geometric
o = o/mean(o, true);
else
o = o-mean(o, false);
end
%@test:1
%$ % Define a dataset.
%$ A = repmat([1.005, 1.05], 10, 1);
%$
%$ % Instantiate a time series object and compute the mean.
%$ try
%$ ts = dseries(A);
%$ ts.center(true);
%$ t(1) = 1;
%$ catch
%$ t = 0;
%$ end
%$
%$ if t(1)
%$ t(2) = all(all(abs(ts.data-ones(10,2))<1e-12));
%$ end
%$ T = all(t);
%@eof:1
......@@ -90,7 +90,7 @@ switch S(1).type
case 'freq'
% Returns an integer characterizing the data frequency (1, 4, 12 or 52)
B = A.dates.freq;
case {'lag','lead','hptrend','hpcycle','chain','detrend','exist','mean','std'} % Methods with less than two arguments.
case {'lag','lead','hptrend','hpcycle','chain','detrend','exist','mean','std','center'} % Methods with less than two arguments.
if length(S)>1 && isequal(S(2).type,'()')
if isempty(S(2).subs)
B = feval(S(1).subs,A);
......
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