[Homer-users] Error using ==> svd

[nicolas niermann]

Thank you.

I found some zeros in the d matrix and changed their value.  
Now it works.
The negative values doesn't bother the analysis. 
 
Thanks for your efforts


________________________________
 Von: David Boas <dboas at nmr.mgh.harvard.edu>
An: homer-users at nmr.mgh.harvard.edu 
Gesendet: 14:38 Freitag, 18.Juli 2014
Betreff: Re: [Homer-users] Error using ==> svd
 


odds are that those 3 data files have data files of 0 or negative values in the d matrix

I suggest that you modify the d matrix in those files so that you
    replace the 0 or negative values with a very small positive number






On 7/18/14, 3:57 AM, nicolas niermann wrote:

Good morning,
>
>
>
>I'm doing my PhD at the Sports University Cologne and use Homer2 for data analysis.
>
>
>I transformed all my files into .nirs-files (allways did it the same way) and processed them (by pressing the "run" button).
>19 files worked and I got the HRF- 3 files constantly show the following error signal:
>
>
>
>
>??? Error using ==> svd
>Input to SVD must not contain NaN or Inf.
>
>
>Error in ==> enPCAFilter at 82
>        [V,St,foo] = svd(c);
>
>
>Error in ==> EasyNIRS_Process at 88
>        eval( fcall );
>
>
>Error in ==> EasyNIRS>runNIRSsignalProcess at 1022
>[procResult procInput err] = EasyNIRS_Process(hmr);
>
>
>Error in ==> EasyNIRS>popupmenuNIRSsignalProcess_Callback at 1435
>        runNIRSsignalProcess(iGrp,iSubj,iRun,handles);
>
>
>Error in ==> gui_mainfcn at 96
>        feval(varargin{:});
>
>
>Error in ==> EasyNIRS at 43
>    gui_mainfcn(gui_State, varargin{:});
>
>
>Error in ==>
>@(hObject,eventdata)EasyNIRS('popupmenuNIRSsignalProcess_Callback',hObject,eventdata,guidata(hObject))
>
>
> 
>??? Error while evaluating uicontrol Callback
>
>
>
>
>I transformed them again, controlled all the data for NaN or Inf but just can't find the error.
>Has someone an idea what the error could be or where to look for the error in the .nirs-file??
>
>
>Best regards
>Nicolas Niermann  
> 
>
>
>
>
>
>
>_______________________________________________
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