[FieldTrip] problem with ft_rejectartifact
Ayelet Landau
ayelet.landau at gmail.com
Tue Sep 4 13:23:21 CEST 2012
Dear FieldTrip experts,
I have encountered a strange behavior in ft_rejectartifact script.
artifacts are defined in variables that contain two collumns and fed into
this function as follows:
cfg.artfctdef.eog.artifact =artifact_eog_all;
other parameters I use are:
cfg.trl=trl;
cfg.artfctdef.reject = 'partial';
cfg.artfctdef.minaccepttim = .2;
then I run ft_rejectartifact with this cfg (and many more categories of
artifacts as exemplified above) and a structure containing my preprocessed
data (with a the same trl I give in cfg.trl above). This is an example of
what the data structure fed into ft_rejectartifact might looks like
hdr: [1x1 struct]
fsample: 1200
grad: [1x1 struct]
sampleinfo: [50x2 double]
trialinfo: [50x4 double]
trial: {1x50 cell}
time: {1x50 cell}
label: {275x1 cell}
cfg: [1x1 struct]
and here is the error that I get:
??? Subscripted assignment dimension mismatch.
Error in ==> ft_redefinetrial at 253
data.trialinfo(iTrl,:) = dataold.trialinfo(iTrlorig,:);
Error in ==> ft_rejectartifact at 483
data = ft_redefinetrial(tmpcfg, data);
When I run ft_rejectartifact with a cfg.data field calling my *.ds file, I
get the following which I could probably use later as an adjusted trl for
ft_preprocessing:
datafile: 'XX_20120821_05.ds'
trl: [79x7 double]
artfctdef: [1x1 struct]
trackconfig: 'off'
checkconfig: 'loose'
checksize: 100000
showcallinfo: 'yes'
headerfile: 'XX_20120821_05.ds'
trlold: [50x7 double]
callinfo: [1x1 struct]
version: [1x1 struct]
Its a bit strange that my original approach stopped working. Any insights
most welcome!
--
Ayelet N. Landau
Postdoctoral Scientist,
Ernst Strüngmann Institute (ESI) for Neuroscience
in Cooperation with Max Planck Society
Deutschordenstr. 46, D-60528 Frankfurt
Mobile: +49 (0)16 22733 110
Fax: +49 (0)69 96769 555
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