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ft_preamble_help.m
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ft_preamble_help.m
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% FT_PREAMBLE_HELP is a helper script that display the calling-function's
% help in case the user did not specify any input argument. This can be
% used in all fieldtrip main functions that take at least a cfg input
% argument, and most also take one or multiple data structures.
% Copyright (C) 2011-2012, Robert Oostenveld, DCCN
%
% This file is part of FieldTrip, see http://www.ru.nl/neuroimaging/fieldtrip
% for the documentation and details.
%
% FieldTrip 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.
%
% FieldTrip 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 FieldTrip. If not, see <http://www.gnu.org/licenses/>.
%
% $Id: ft_preamble_help.m 5113 2012-01-11 07:57:16Z roboos $
if nargin==0
stack = dbstack('-completenames');
% stack(1) is this script
% stack(2) is the calling ft_postamble function
% stack(3) is the main FieldTrip function that we are interested in
stack = stack(3);
help(stack.name);
% throw the error as if it happened in the original function
msg.message = 'This function requires one or multiple input arguments, please refer to the documentation above';
msg.identifier = '';
msg.stack = stack;
error(msg);
end