Iím 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).  Itíll 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.serenapanasiti@gmail.com> 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
 

------------------------------------------------------------------------------
Rapidly troubleshoot problems before they affect your business. Most IT
organizations don't have a clear picture of how application performance
affects their revenue. With AppDynamics, you get 100% visibility into your
Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro!
http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk_______________________________________________
Erppcatoolkit-support mailing list
Erppcatoolkit-support@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/erppcatoolkit-support


--------------------------------------------------------------------------------

Joseph Dien,
Senior Research Scientist
Maryland Neuroimaging Center
University of Maryland 

Phone: 202-297-8117