[Eeglablist] study file issue when analyzing two IVs

[Makoto Miyakoshi]

Dear Fran,

My experience with the latest version of EEGLAB is limited, but I hope my
general guesses helps.

1. Most likely, you have empty data in one of the conditions in your
balanced design. Check the data for an empty entry.
2. Condition name issues--do not use anything other than alpha-numerical
characters (and for safety, do not use numbers to start with)
3. Similar to above, confusion between numbers and characters--sometimes it
causes problems.

Makoto


On Tue, Jul 14, 2020 at 1:52 PM Fran Copelli <fcopelli at ryerson.ca> wrote:

> Hi,
>
> I have 44 participants (22 GroupA, 22 GroupB). All participants were
> exposed to the same experiment (9 condition types) and preprocessed in the
> same way.
>
> I am trying to visualize ERSPs, but when I try to compare the two groups, I
> receive the error *"cannot handle conditions with different number of
> components, (error occurred in function std_readdata() at line 290)"*
>
> I am sure that all participants have trials in the 9 conditions, so it is
> not an issue of missing data. The study generates ERSPs when looking at
> type alone (toggled in the '*edit study design*' menu),  but when
> generating for  groups, I get the error.
>
> Please advise as this is basic functionality of the eeglab study. I have a
> colleague who has groupxcondition comparison, and is analyzing in electrode
> space (as opposed to source analysis, like myself), and she was able to
> generate her ERSPs just fine.
>
> Thanks
>
> *Fran*
>
> SMART Lab, Psychology Department
> _______________________________________________
> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
> To unsubscribe, send an empty email to
> eeglablist-unsubscribe at sccn.ucsd.edu
> For digest mode, send an email with the subject "set digest mime" to
> eeglablist-request at sccn.ucsd.edu
>