Do you have both polar and eccen data? If so, can you send the Xtmp.mat file?

On 6/8/16 6:08 AM, Francesca Strappini wrote:

Hi Freesurfer experts,

I'm re-posting this message because I think it got lost.

I'm trying to analyze some phase-encoded data with the eccentricity
protocol for retinotopic data and I'm having troubles with selxavg3-sess.

I run the following commands:

mkanalysis-sess -analysis OrderDisorder.idsubj.lh -surface idsubj lh -TR 2
-retinotopy 24 -paradigm rtopy.par -fwhm 0 -per-run -nskip 5 -fsd bold

selxavg3-sess -a OrderDisorder.idsubj.lh -s idsubj_OrderDisorder_continous

and I got this error message:

Found 122573/130829 (93.7) voxels in mask
Creating Design Matrix
 ... creation time =  0.019 sec
DoMCFit = 1
ntptot = 875, nX = 80, DOF = 795
Saving X matrix to
/usr/local/freesurfer/fsfast/OrderDisorder_new/MK_OrderDisorder_continous/bold/OrderDisorder.MishaK.lh/Xtmp.mat
Error using svd
Input to SVD must not contain NaN or Inf.

Error in cond (line 35)
    s = svd(A);

Error in fast_selxavg3 (line 279)
  XCond = cond(XtX);

Thanks!

Best

Francesca



--
Francesca Strappini, Ph.D.
Neurobiology Department
Weizmann Institute of Science
234 Herzl Street, Rehovot 7610001 Israel
Tel.: +972 58 444 2584
E-mail: francesca.strappini@weizmann.ac.il

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