55 lines
1.6 KiB
Matlab
55 lines
1.6 KiB
Matlab
function c = demean(x)
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% Removes the mean of each column of a matrix.
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%@info:
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%! @deftypefn {Function File} {@var{c} =} demean (@var{x})
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%! @anchor{demean}
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%! This function removes the mean of each column of a matrix.
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%!
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%! @strong{Inputs}
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%! @table @var
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%! @item x
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%! Matlab matrix (T-by-N).
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%! @end table
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%!
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%! @strong{Outputs}
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%! @table @var
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%! @item c
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%! Matlab matrix (T-by-N). The demeaned x matrix.
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%! @end table
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%!
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%! @strong{This function is called by:}
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%! @ref{compute_cova}, @ref{compute_acov}, @ref{compute_std}.
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%!
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%! @strong{This function calls:}
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%! @ref{ndim},
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%!
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%! @end deftypefn
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%@eod:
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% Copyright (C) 2011-2012 Dynare Team
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%
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% This file is part of Dynare.
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%
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% Dynare is free software: you can redistribute it and/or modify
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% it under the terms of the GNU General Public License as published by
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% the Free Software Foundation, either version 3 of the License, or
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% (at your option) any later version.
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%
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% Dynare is distributed in the hope that it will be useful,
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% but WITHOUT ANY WARRANTY; without even the implied warranty of
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% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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% GNU General Public License for more details.
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%
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% You should have received a copy of the GNU General Public License
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% along with Dynare. If not, see <http://www.gnu.org/licenses/>.
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% Original author: stephane DOT adjemian AT univ DASH lemans DOT fr
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if ndim(x)==1
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c = x-mean(x);
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elseif ndim(x)==2
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c = bsxfun(@minus,x,mean(x));
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else
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error('descriptive_statistics::demean:: This function is not implemented for arrays with dimension greater than two!')
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end |