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Bug 1458 - ft_chantype does not recognize a grad structure correctly
| Status | CLOSED WORKSFORME |
| Reported | 2012-05-07 21:00:00 +0200 |
| Modified | 2012-08-23 10:41:38 +0200 |
| Product: | FieldTrip |
| Component: | core |
| Version: | unspecified |
| Hardware: | PC |
| Operating System: | Windows |
| Importance: | P5 major |
| Assigned to: | Boris Reuderink |
| URL: | |
| Tags: | |
| Depends on: | |
| Blocks: | |
| See also: | http://bugzilla.fcdonders.nl/show_bug.cgi?id=1522 |
Joaquín Morís - 2012-05-07 21:00:46 +0200
Windows Vista Matlab R2008b Fieldtrip build 20120506 Following the tutorial "Event related averaging and planar gradient", after preprocessing the data, the tutorial proposes: cfg = []; avgFIC = ft_timelockanalysis(cfg, dataFIC_LP); Doing so, produces the following error: ??? Error using ==> ft_chantype at 64 the input that was provided to this function cannot be deciphered Error in ==> ft_datatype_sens at 128 sens.chantype = ft_chantype(sens); Error in ==> ft_datatype_raw at 99 data.grad = ft_datatype_sens(data.grad); Error in ==> ft_checkdata at 177 data = ft_datatype_raw(data, 'hassampleinfo', hassampleinfo); Error in ==> ft_timelockanalysis at 134 data = ft_checkdata(data, 'datatype', {'raw', 'comp'}, 'feedback', 'yes', 'hassampleinfo', 'yes'); The error is due to the function ft_chantype not recognizing a grad structure. Probable solution: The line 42 of ft_chantype is: isgrad = isa(input, 'struct') && isfield(input, 'pnt') && isfield(input, 'ori'); However, in ft_senstype, lines 125 and 126: isgrad = isa(input, 'struct') && isfield(input, 'label') && isfield(input, 'pnt') && isfield(input, 'ori'); % old style isgrad = (isa(input, 'struct') && isfield(input, 'label') && isfield(input, 'coilpos')) || isgrad; % new style Adding this second option of recognizing a grad structure to ft_chantype fixes the problem
Jan-Mathijs Schoffelen - 2012-05-16 07:34:04 +0200
Thanks for posting Joaquin, we'll look at this a.s.a.p
Robert Oostenveld - 2012-06-08 14:07:01 +0200
see also bug #1228, it might be related.
Robert Oostenveld - 2012-06-08 14:07:24 +0200
(In reply to comment #2) sorry, that should have read see also bug #1288, it might be related.