eigen values - extract rois signals

Submitted by saikar on

Hi All,

 

I want to extract ROI signals using DPARSF, but the eigen values instead of the mean values of the ROIs.

Is there a way to extract eigen values in DPARSF?

Thanks,

Sai

YAN Chao-Gan

Wed, 09/17/2014 - 18:39

Permalink

Hi Sai,

Line 208:

SeedSeries{1,iROI} = mean(AllVolume(:,find(MaskROI)),2);


Change mean -> eig
to have a try.

Hope this helps.

Best,

Chao-Gan


On Wed, Sep 17, 2014 at 2:05 PM, The R-fMRI Network <rfmri.org@gmail.com> wrote:
[To post a comment, please reply to rfmri.org@gmail.com ABOVE this line]

By sai karne (saikar)

Hi All,


 


I want to extract ROI signals using DPARSF, but the eigen values instead of the mean values of the ROIs.


Is there a way to extract eigen values in DPARSF?


Thanks,


Sai


Online version of this post: http://rfmri.org/content/eigen-values-extract-rois-signals


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I tried that once , it did not work . I am running it again to see if it runs this time. Thanks for the reply, I will keep you posted on the outcome.

 

sai

 

From: RFMRI.ORG [mailto:rfmri.org-bounces@rnet.co] On Behalf Of The R-fMRI Network Sent: Wednesday, September 17, 2014 2:40 PM
To: rfmri.org@rnet.co
Subject: Re: [RFMRI] eigen values - extract rois signals

 

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Commented by YAN Chao-Gan (YAN Chao-Gan)

Hi Sai,

 

Line 208:

 

            SeedSeries{1,iROI} = mean(AllVolume(:,find(MaskROI)),2 );

 

 

Change mean -> eig

to have a try.

 

Hope this helps.

 

Best,

 

Chao-Gan

 

 

On Wed, Sep 17, 2014 at 2:05 PM, The R-fMRI Network <rfmri.org@gmail.com> wrote:

[To post a comment, please reply to rfmri.org@gmail.com ABOVE this line]

 

By sai karne (saikar)

Hi All,

 

 

 

I want to extract ROI signals using DPARSF, but the eigen values instead of the mean values of the ROIs.

 

Is there a way to extract eigen values in DPARSF?

 

Thanks,

 

Sai


Online version of this post: http://rfmri.org/content/eigen-values-extract-rois-signals

 

Many a little makes a mickle -- your kind contributions shall make our efforts not perish from the earth. Please help The R-fMRI Network at http://rfmri.org/#overlay=HelpUs
To manage subscriptions, please visit: http://rnet.co/mailman/listinfo/rfmri.org_rnet.co
Mail comment ID: http://rfmri.org/mailcomment/redirect/%3C31.1841.0.1410977121.4f7363ef0cc5954e64ca113a2e53d9df%40www.rfmri.org%3E

 


Online version of this post: http://www.rfmri.org/comment/3271#comment-3271

 

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 Hi Chao-Gan,

I tried it again and here is the error that I get,

??? Error using ==> eig
Matrix must be square.

Error in ==> y_ExtractROISignal at 209
            SeedSeries{1,iROI} = eig(AllVolume(:,find(MaskROI)),2);

 

Sai.

Sorry, my bad, you should use something like 

Line 104:

[U S V] = svd(AllVolume,'econ');
PCs = U(:,1:PCNum);

Hope you know some programming.

Best,

Chao-Gan



On Wed, Sep 17, 2014 at 3:28 PM, The R-fMRI Network <rfmri.org@gmail.com> wrote:
[To post a comment, please reply to rfmri.org@gmail.com ABOVE this line]

Commented by sai karne (saikar)

 Hi Chao-Gan,

I tried it again and here is the error that I get,

??? Error using ==> eig
Matrix must be square.

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DPABI/DPABISurf/DPARSF