[Mne_analysis] problem with sample data set: attempt to compute noise-cov fails

[Eric Larson]

It's likely that you either have too few events being used, or there
are too many epochs that are being thrown out (due to exceeded
thresholds or flat channels).

Eric


On Fri, Apr 13, 2012 at 4:55 PM, Jeff Eriksen <eriksenj at ohsu.edu> wrote:
> Hi,
>
> I am trying to review the tutorial in Chapter 12. In section 12.10 I entered
> the mne-process-raw command to compute the noise-cov matrix,
>
> mne_process_raw --raw sample_audvis_raw.fif --lowpass 40 --projon
> --savecovtag -cov --cov audvis.cov
>
> and got this error:
>
> Too few samples (required : 1835 got : 363)
>
> I used fresh copies of the input files.
>
> What could be going wrong? I cannot continue with mne-do-inverse-operator
> since it complains it does not have the sample-aaudvis-cov.fif file.
>
> Thanks,
> -Jeff
>
>
>
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