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% STK_RESCALE rescales a dataset from one box to another
% Copyright Notice
%
% Copyright (C) 2012-2014 SUPELEC
%
% Author: Julien Bect <julien.bect@supelec.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)
% Convert box1 to an stk_hrect object
% (we know that box1 is not an stk_hrect object, otherwise
% we wouldn't have ended up here)
if isempty (box1)
box1 = stk_hrect (size (x, 2)); % Default: [0; 1] ^ DIM
else
box1 = stk_hrect (box1);
end
% Call @stk_hrect/stk_rescale
[x, a, b] = stk_rescale (x, box1, varargin{:});
end % function stk_rescale
%!shared x
%! x = rand (10, 4);
%! y = stk_rescale (x, [], []);
%! assert (stk_isequal_tolabs (x, y));
%!test
%! y = stk_rescale(0.5, [], [0; 2]);
%! assert (stk_isequal_tolabs (y, 1.0));
%!test
%! y = stk_rescale (0.5, [0; 1], [0; 2]);
%! assert (stk_isequal_tolabs (y, 1.0));
%!test
%! y = stk_rescale (0.5, [0; 2], []);
%! assert (stk_isequal_tolabs (y, 0.25));
%!test
%! y = stk_rescale (0.5, [0; 2], [0; 1]);
%! assert (stk_isequal_tolabs (y, 0.25));
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