[Homer-users] Question about configuring .cfg file

[Meryem Ayse Yucel]

Hi Venkata,

Do you have .nirs files in your working directory? If you have matlab, I'd
suggest you to load one of your nirs files (load  xxx.nirs -mat) and then
check your d matrix in case there is anything unusual. If you think
everything is fine, you can pass me one of them and I can take a look at
it. I don't think the problem is related to the config files.

Meryem



> Dear HOMER Users,
>
> Please take a look at my questions and help me resolve this issues. My raw
> data file from HITACHI ETG-4000 has around 5000 to 6000 data points in the
> time series. I converted it into .fNIRS format for further processing.
> However I am not able to configure the processing option file (*.cfg) or
> use the processing option files used for the examples.
>
>
> At the moment I am trying to play with these *.cfg files provided in the
> sample files on HOMER 2 website before actually configuring them to
> process my data. I started by using the simplest *.cfg file from example 1
> which only has band pass filters and OD to Conc conversion. Although I do
> not get any error messages when I use this file to process my data, I am
> also not seeing any processed data. When I click on OD and Conc, I see
> nothing in the data window. I see a similar response when I used .cfg file
> from example 5. There was no error message when I used this file as well.
>
>
> I then used .cfg files from example 4 to see what it does to my data and I
> get the following error message in the command window.
>
>
> ??? 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 apologize for the long email. I'd appreciate any feedback you can give
> me. Before configuring these .cfg files I would like to see what the
> example files do to my data. For some reason they are not even filtering
> or giving me OD for my data files.
>
> Thanks,
>
> Sincerely,
>
> V.N.Pradeep Ambati, PhD
> Post-Doc, School of Health Physical Education and Recreation
> Biomechanics Research Building
> 6160 University Drive
> Omaha, NE 68182-0860
>
> University of Nebraska at Omaha
> Mob: 804-402-0415
> email: vambati at unomaha.edu
> coe.unomaha.edu/biomechanics<http://coe.unomaha.edu/biomechanics>
> [cid:2AD8C849-75A3-43F5-9CEE-F033CF946A16 at brf.unomaha.edu]
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