That subject only has 5 conditions (#6 is not represented in the par file). The easiest thing to do is to randomly assign one of the other conditions to #6.
doug Maximilien Chaumon wrote: > Hi Freesurfers, > > I'm trying to selxavg3 my data. > > My design includes 6 conditions including a 0 rest condition. 3 > contrasts have been defined using mkcontrast. The analysis too using > mkanalysis. > > I use this command line : > [/homes/11/chaumon/data] (nmr-std-env) selxavg3-sess -analysis > "Analyse_Simple_Confidence" -s S003 -overwrite > > Which returns what's in the log file attached. > and ends with > > Creating Design Matrix > Warning: Matrix is singular to working precision. > > In fast_selxavg3 at 212 > Warning: Matrix is singular to working precision. > > In fast_selxavg3 at 212 > Warning: Matrix is singular to working precision. > > In fast_selxavg3 at 212 > Warning: Matrix is singular to working precision. > > In fast_selxavg3 at 212 > Warning: Matrix is singular to working precision. > > In fast_selxavg3 at 212 > Warning: Matrix is singular to working precision. > > In fast_selxavg3 at 212 > Warning: Matrix is singular to working precision. > > In fast_selxavg3 at 212 > Warning: Matrix is singular to working precision. > > In fast_selxavg3 at 212 > Warning: Matrix is singular to working precision. > > In fast_selxavg3 at 212 > ntptot = 693, nX = 15, DOF = 678 > Saving X matrix to > /autofs/space/bomba_016/users/chaumon/S003/bold/Analyse_Simple_Confidence/Xtmp.mat > ??? Error using ==> svd > Input to SVD must not contain NaN or Inf. > > Error in ==> cond at 40 > s = svd(A); > > Error in ==> fast_selxavg3 at 248 > XCond = cond(XtX); > > >> 09-Oct-2009 18:03:13 > Salut ! > ------------------------------------------ > ERROR: fast_selxavg3() failed\n > > > > I'm puzzled. I've been checking and rechecking my design. The problem > does not come from the contrasts because I get the same error if I > remove them... > Any help will be greatly appreciated. > > Thanks, > Max > > ------------------------------------------------------------------------ > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 In order to help us help you, please follow the steps in: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
