[Eeglablist] Not sure where the bug is

Tarik S Bel-Bahar tarikbelbahar at gmail.com
Tue Dec 5 12:29:22 PST 2017


Hello Tyler, not sure if this helps: it's totally possible that
eeg_lat2point removes or discounts 2 data points. It's unclear whether
clean_windows can or should accomodate the changes made by eeg_lat2point.
As this is unlikely to lead to a major issue, you could modify the
sample_mask (inside the code) to take 2 less datapoints, although this
might lead to several changes that one would need to make. Another option
is to contact the developer Dr.Kothe? directly. Thanks very much for
letting the list know when you have a solution, as it would benefit other
users to learn from your experience.

On Sun, Dec 3, 2017 at 8:34 PM, Tyler Grummett <
tyler.grummett at flinders.edu.au> wrote:

> Dear EEGLAB
>
>
> Im having a great time using the clean_rawdata toolbox, however, I ran
> into a bug recently which is preventing me from using the
> function vis_artifacts. The bug occurs after Ive used clean_windows and try
> to compare the output data to the input data. The following error occurs:
>
>
> Subscripted assignment dimension mismatch.
>
> Error in vis_artifacts/expand_rejections (line 334)
>         tmpdata(EEG.etc.clean_channel_mask,EEG.etc.clean_sample_mask)
>         = EEG.data;
>
> Error in vis_artifacts (line 101)
>     new = expand_rejections(to_continuous(new));
>
> Digging into the code I find out that the number of true logicals in
> EEG.etc.clean_sample_mask is equal to 2449098, whereas the number of data
> points in my 'cleaned' data is 2449096. Returning to the clean_windows
> function, I get the following warning:
>
>
> Warning: eeg_lat2point(): Points out of range detected.
> Points replaced with maximum value
> > In eeg_lat2point (line 101)
>   In pop_select (line 534)
>   In clean_windows (line 136)
>   In clean_artifacts (line 226)
>   In clean_rawdata (line 83)
>   In mcgurk_clean_data (line 187)
>
> This suggests to me that eeg_lat2point may have removed some data points?
> Or do you think that clean_windows should accommodate for changes made my
> eeg_lat2point? Like the subject of this email suggests, I dont know where
> the bug is.
>
>
> I can confirm that I am using clean_rawdata version 0.32
>
>
> Tyler
>
>
> *************************
>
> *Tyler Grummett ( BBSc, BSc(Hons I))*
> *PhD Candidate*
> *Brain Signals Laboratory*
> *Flinders University*
> *Rm 5A301*
> *Ext 66125*
>
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