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% ISMEMBER [overload base function]
% Copyright Notice
%
% Copyright (C) 2017 CentraleSupelec
%
% Author: Julien Bect <julien.bect@centralesupelec.fr>
% Copying Permission Statement
%
% This file is part of
%
% STK: a Small (Matlab/Octave) Toolbox for Kriging
% (https://github.com/stk-kriging/stk/)
%
% 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 varargout = ismember (A, B, varargin)
if ~ all (cellfun (@ischar, varargin))
stk_error ('Invalid flag (should be a string).', 'InvalidArgument');
end
if isa (A, 'stk_factorialdesign')
varargout = cell (1, max (nargout, 1));
[varargout{:}] = ismember (double (A), B, varargin{:});
else % B is an stk_factorialdesign object
has_rows = false;
has_legacy = false;
for k = 1:(numel (varargin))
switch varargin{k}
case 'rows'
has_rows = true;
case 'legacy'
has_legacy = true;
otherwise
errmsg = sprintf ('Unknown flag: %s', varargin{k});
stk_error (errmsg, 'InvalidArgument');
end
end
if has_rows && ~ has_legacy && (nargout < 2) % This case can be optimized
lia = ismember_fd (A, B);
varargout = {lia};
else % otherwise, use the base ismember function
varargout = cell (1, max (nargout, 1));
[varargout{:}] = ismember (A, double (B), varargin{:});
end
end
end % function
function [lia, locb] = ismember_fd (A, B)
[n, dim] = size (A);
if dim ~= length (B.levels)
stk_error (['A and B should have the same number ' ...
'of columns'], 'InvalidArgument');
end
b = false (n, dim);
for j = 1:dim
b(:, j) = ismember (A(:, j), B.levels{j});
end
lia = all (b, 2);
end % function
%!shared A, B, BB, b
%!
%! i_max = 10; n = 100; d = 5;
%!
%! A = randi (i_max, n, d);
%!
%! levels = repmat ({1:i_max}, 1, d);
%! levels{4} = 1:2:i_max;
%! B = stk_factorialdesign (levels);
%!
%! BB = double (B);
%!test b = ismember (A, B);
%!assert (isequal (b, ismember (A, BB)));
%!test b = ismember (A, B, 'rows');
%!assert (isequal (b, ismember (A, BB, 'rows')));
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