Re: [Erppcatoolkit-support] different average conditions per participant

[Joseph D. <jd...@ma...>]

Oops!  I’ll have a fix out to you tomorrow.  I’m in the final stages of posting a new release and will include the fix as part of it.  Thanks for the report!

Joe

On Dec 28, 2013, at 4:33 AM, Maria Serena Panasiti <m.s...@gm...> wrote:

> Dear Joe,
> 
> it worked perfectly, thank you very much. Unfurtunaltely I am having a new problem: I run the first step temporal PCA and everything goes fine, when I then try to run the spatial pca on the temporal PCA factors I get this error:
> 
> ??? Reference to non-existent field 'recTime'.
> 
> Error in ==> ep_doPCA at 879
>     FactorResults.recTime=theData.recTime;
> 
> Error in ==> ep_doPCAst at 339
>     [stFactorResults] = ep_doPCA('asis', ROTATION, ROTOPT, MAT_TYPE, NUM_FAC, theData, LOADING);
> 
> Error in ==> ep>pickPCAdata at 5593
>         FactorResults = ep_doPCAst(theData.pca, 'UNRT', EPmain.pca.rotopt, PCArel, 1, PCAloading,PCAmode); %scree test only
>         needs unrotated solution
> 
> ??? Error while evaluating uicontrol Callback
> 
> 
> If I put a comment before this part of the ep_doPCA script:
> 
>  %FactorResults.recTime=theData.recTime;
> 
> then the the scree test works, and the spatial PCA (Infomax rotation) actually starts but at the very end I get this error:
> 
> Done with reconstructing PCA waveforms...
> ??? Index exceeds matrix dimensions.
> 
> Error in ==> ep_addToEPworkCache at 123
>                 minFac=min(min(min(EPdata.data(EEGchans,:,theCell,theSub,theFactor,:))));
> 
> Error in ==> ep_saveEPdataset at 75
> newDataset=ep_addToEPworkCache(EPdata);
> 
> Error in ==> ep>pickPCAdata at 5730
>     EPdataset=ep_saveEPdataset(EPdataset,PCAoutput,length(EPdataset.dataset)+1,'no');
> 
> ??? Error while evaluating uicontrol Callback
> 
> The same thing happens if i try to run the spatial PCA on the average data.
> 
> I am using Matlab 2007b but I have also try Matlab 2011
>                    Eeglab 8_3
>                    Fieldtrip lite last version available
> 
> I thank you in advance for your help and apologize if the question is too basic, I've tried to solve the problem by reading the tutorial but I couldn't figure it out.
> 
> Best wishes,
> 
> Serena
> 
> 
> 
> On 15 December 2013 07:51, Joseph Dien <jd...@ma...> wrote:
> I’m going to assume that you are using a file format like Neuroscan .AVG where each condition of each subject is a separate file.  If so, use the Single File option of the Read function to import them (see documentation).  It’ll form a single file in which each subject and each condition is separate but are all held in a single file for convenience sake.
> 
> Cheers!
> 
> Joe
> 
> 
> On Dec 14, 2013, at 4:56 AM, Maria Serena Panasiti <m.s...@gm...> wrote:
> 
>> Dear All,
>> 
>> I have just downloaded the toolkit to perform PCA on my averaged data. I am struggling to understand how I can keep my experimental conditions separeted when I read my data on the toolkit.
>> 
>> I have two experimental conditions for each subject. I glued all of the averages together in the edit window (append function); I gave the same subject name to the two experimental conditions averages and assigned them a weight of :
>> 
>> weight   name
>> 1            sub001   (This would be: AVg condtion1 subject1)
>> 1            sub001   (This would be: AVg condtion2 subject1)
>> 1            sub002    (This would be: AVg condtion1 subject2)
>> 1            sub002   (This would be: AVg condtion2 subject2)
>> 1            sub003   (This would be: AVg condtion1 subject3)
>> 1            sub003   (This would be: AVg condtion2 subject3)
>> 
>> 
>> 
>> When I run the PCA, the toolkit treats each raw as a single participant (in the command window it would count up to six in this case)
>> So I was wondering if this was the right way to feed the program with different averages per conditions.
>> 
>> As I understood PCA I should need to keep conditions separated but please tell me if I am wrong.
>> 
>> Any help would be very much appreciated.
>> 
>> Best wishes,
>> 
>> Serena
>> 
>> 
>> 
>> -- 
>> Maria Serena Panasiti, Ph.D
>> 
>> Cognitive Social and Affective Neuroscience Lab
>> Department of Psychology.
>> University of Rome "La Sapienza".
>> Via dei Marsi 78 - 00185 - Roma.
>> Phone: (+39) 06-49917635. Fax: (+39) 06-49917635
>> 
>> School of Psychology & Clinical Language Sciences
>> University of Reading 
>> Reading, United Kingdom 
>> 
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> 
> 
> --------------------------------------------------------------------------------
> 
> Joseph Dien,
> Senior Research Scientist
> Maryland Neuroimaging Center
> University of Maryland 
> 
> E-mail: jd...@ma...
> Phone: 202-297-8117
> http://joedien.com
> 
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> 
> -- 
> Maria Serena Panasiti, Ph.D
> 
> Cognitive Social and Affective Neuroscience Lab
> Department of Psychology.
> University of Rome "La Sapienza".
> Via dei Marsi 78 - 00185 - Roma.
> Phone: (+39) 06-49917635. Fax: (+39) 06-49917635
> 
> School of Psychology & Clinical Language Sciences
> University of Reading 
> Reading, United Kingdom