If you have an event type for which there is no event, then that is definitely the problem. Let me know if it is not that. doug
Sid Kundu wrote: > It is attached. Finn mentioned it may be due to an event number being > missing from the particular subject, which could be possible in the > analysis I am doing. > _________________________________ > Sid Kundu > Biomedical Engineering > Boston University > > > > On Thu, Mar 1, 2012 at 11:15 AM, Douglas N Greve > <gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>> wrote: > > It's probably a problem with your design. Can you send me the > Xtmp.mat file? > doug > > > Sid Kundu wrote: > > Hi Doug, > > I created a new first level analysis along with new contrasts > and event numbers for a group of subjects I had previously > done analyses on. All but one of the subjects finished > selxavg3 without error, but one subject gave the following error: > > > Saving X matrix to > > /home/sidkundu/freesurfer/sessions/Heading-TTP/LMV2010_N19_Heading-TTP/bold/TTP-analysis-3/Xtmp.mat > Error using svd > Input to SVD must not contain NaN or Inf. > > Error in cond (line 39) > s = svd(A); > > Error in fast_selxavg3 (line 248) > XCond = cond(XtX); > >> ------------------------------------------ > ERROR: fast_selxavg3() failed\n > > > I looked at the generated Xtmp.mat file and it shows the > design matrix X has all zeros in 2 columns, resulting in NaNs > in the same columns for Xn, and corresponding NaNs in XtX. I'm > wondering what would cause this or why it would only occur for > only one subject. > > _________________________________ > Sid Kundu > Biomedical Engineering > Boston University > > > -- > Douglas N. Greve, Ph.D. > MGH-NMR Center > gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu> > Phone Number: 617-724-2358 <tel:617-724-2358> Fax: 617-726-7422 > <tel:617-726-7422> > > Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > > > > The information in this e-mail is intended only for the person to > whom it is > addressed. If you believe this e-mail was sent to you in error and > the e-mail > contains patient information, please contact the Partners > Compliance HelpLine at > http://www.partners.org/complianceline . If the e-mail was sent to > you in error > but does not contain patient information, please contact the > sender and properly > dispose of the e-mail. > > -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
