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% STK_RESCALE [overload STK function]
% Copyright Notice
%
% Copyright (C) 2012-2014 SUPELEC
%
% Author: Julien Bect <julien.bect@centralesupelec.fr>
% Copying Permission Statement
%
% This file is part of
%
% STK: a Small (Matlab/Octave) Toolbox for Kriging
% (http://sourceforge.net/projects/kriging)
%
% 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 [x, a, b] = stk_rescale (x, box1, varargin)
% Ensure that box1 is an stk_hrect object
if ~ isa (box1, 'stk_hrect')
if isempty (box1)
box1 = stk_hrect (size (x, 2)); % Default: [0; 1] ^ DIM
else
box1 = stk_hrect (box1);
end
end
% Rescale using @stk_hrect/stk_rescale
if isa (x, 'stk_dataframe')
[x.data, a, b] = stk_rescale (x.data, box1, varargin{:});
else
[x, a, b] = stk_rescale (x, box1, varargin{:});
end
end % function
%!test
%! u = rand(5, 1) * 2;
%! x = stk_dataframe(u);
%! y = stk_rescale(x, [0; 2], [0; 3]);
%! assert (isa (y, 'stk_dataframe') && isequal(double(y), u * 3/2))
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