[FieldTrip] Problems detecting Artifacts in Neuroscan EEG file

[Omoniyi Segun]

Hi,


I am new to fieldtrip and have been struggling with it for the past four weeks. 


I am trying to do artifact detection using the Automatic Artifact detection tutorial on the Site. The first issue I am having is when i set % make the process interactive cfg.artfctdef.zvalue.interactive = 'yes';
I see nothing in the figure that is plotted. I see the data plotted when i use the sample data provided but not when i use my Neuroscan EEG data.

Secondly when i click on stop I get the error pasted below.



??? Reference to non-existent field 'dimord'.

Error in ==> dimlength at 74
      elseif strcmp(data.(fld), 'rpt_pos')

Error in ==> fixsampleinfo at 31
  ntrial = dimlength(data, 'rpt');

Error in ==> ft_checkdata at 579
  data = fixsampleinfo(data);

Error in ==> ft_rejectartifact at 203
  data = ft_checkdata(data, 'hassampleinfo', 'yes');

Error in ==> do_reject_artifacts at 70
data_no_artifact_jump = ft_rejectartifact(cfg,artifact_jump);

Error in ==> do_preprocess at 45
                do_reject_artifacts(subject);

I am comfortable making changes to the code and would like some pointers in the right direction. I am not sure if this is an issue with Neuroscan data.

Thanks

Omoniyi Segun
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