ECG artifact with MEG data

[Virginie van Wassenhove]

Hi everyone, 

I am testing the ECG artifact removal using the ICA method described here:
http://fieldtrip.fcdonders.nl/example/use_independent_component_analysis_ica_to_remove_ecg_artifacts

At the stage where freqanalysis is to be computed on the components
comp_ecg, I encounter this error, anyone else has experienced such issue?

the input is component data with 204 components and 204 original channels
??? Error using ==> checkdata at 388
This function requires raw data as input.

Error in ==> freqanalysis at 165
data = checkdata(data, 'datatype', 'raw', 'feedback', 'yes', 'hasoffset',
'yes');

Thanks in advance,
Virginie

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