[Eeglablist] Error while computing a grand average

[Makoto Miyakoshi]

Dear Fernanda,

I would do
1. load all the datasets (use 'loadmode', 'info' option in pop_loadset)
2. extract channel names from all datasets ({EEG.chanlocs.labels}')
3. use strcmp() to check if they have same channel names (or store all
subjects all channel names and run unique() to find all types of channel
names, etc...)
I don't know how you are familiar with coding in Matlab. Alternatively, you
can show 2D channel locations with names to check all channel names across
all subjects.

Makoto

On Tue, Sep 8, 2015 at 8:01 AM, Fernanda Pérez Gay Juárez <
fernandapgj at gmail.com> wrote:

> Dear Makoto:
>
> Yes, that's what it says it's happening. The weird thing is that I used
> the same datasets for a previous grand average and it worked. I don't know
> what could have happened in the process.
>
> My question then is:  How can I check the channel names and change them to
> make them consistent? Do I have to do it dataset by dataset?
>
> I appreciate your help.
>
> Thanks,
>
> Fernanda
>
> 2015-09-02 14:25 GMT-04:00 Makoto Miyakoshi <mmiyakoshi at ucsd.edu>:
>
>> Dear Fernanda,
>>
>> Hmm... my initial guess is that there is inconsistency in channel names
>> across subjects?
>>
>> Makoto
>>
>> On Mon, Aug 31, 2015 at 10:20 AM, Fernanda Pérez Gay Juárez <
>> fernandapgj at gmail.com> wrote:
>>
>>> Hello,
>>>
>>> I was trying to run a grand average on 23 subjects, comparing 2
>>> sessions. I have already used this files to run other averages
>>> (betweensubjects, etc). However, I got this error message:
>>> "Cannot use file to lookup channel names, the file needs to be
>>> recomputed, (Error occured in function std_readfile() at line 142)"
>>>
>>> Has somebody got this before? What should I do next?
>>>
>>> Thanks,
>>>
>>> Fernanda
>>>
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>>
>>
>>
>> --
>> Makoto Miyakoshi
>> Swartz Center for Computational Neuroscience
>> Institute for Neural Computation, University of California San Diego
>>
>
>


-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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