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Hi Steve sorry to disturb you again now my matrices are the following: /NumWaves 5 /NumPoints 15 /PPheights 1 1 1 1 1 /Matrix 1 1,0434 1,1634 1,9836 -4,7333 1 0,3511 0,6998 0,6660 -6,7333 1 0,3733 0,1620 1,3627 4,2667 1 -0,7298 1,1634 0,9047 -3,7333 1 -0,3459 -0,1429 0,6176 -1,7333 1 -0,0511 0,1898 -0,1555 -3,7333 1 -0,0954 -2,1662 0,0961 -4,7333 1 -0,7031 -1,0768 -0,6896 -5,7333 1 0,3342 0,4163 -0,7304 9,2667 1 0,8755 -0,1218 -0,4432 -2,7333 1 -1,3132 -1,0332 0,5826 6,2667 1 0,4781 -0,9344 0,2008 -0,7333 1 -0,0692 0,1785 -1,1205 18,2667 1 0,6799 1,1634 -1,0984 1,2667 1 -0,8272 0,3381 -2,1765 -4,7333 /NumWaves 5 /NumContrasts 6 /PPheights 1 1 1 1 1 /Matrix 0 1 0 0 0 0-1 0 0 0 0 0 1 0 0 0 0-1 0 0 0 0 0 1 0 0 0 0-1 0 I run the randomise -i all_FA_skeletonised -o tbss -m mean_FA_skeleton_mask -d design_nico.mat -t design_nico.con -n 10000 --T2 -V (without -D) and I got the following error message :( Loading Data: Data loaded ERROR: Program failed An exception has been thrown Runtime error:- detected by Newmat: process fails to converge MatrixType = Rect # Rows = 15; # Cols = 4 Trace: SVD; pinv. 2012/7/31 Stephen Smith <[log in to unmask]> > No - I meant you don't need BOTH - you need one or the other. > Cheers. > > > > On 31 Jul 2012, at 15:36, sandra petris wrote: > > ah thanks a lot Steve! I'm gonna delete the -D option and the 1st colums, > let'see what happens > > ciao! Sandra > > 2012/7/31 Stephen Smith <[log in to unmask]> > >> Hi - the answer is clearly in the error message :-) >> You don't need the -D option *and* the EV full of 1s. >> Steve. >> >> >> On 31 Jul 2012, at 12:34, sandra petris wrote: >> >> Hi Stephen, >> >> when I run randomise -i all_FA_skeletonised -o tbss -m >> mean_FA_skeleton_mask -d design_nico.mat -t design_nico.con -n 10000 -D >> --T2 -V I got the following error message: >> >> Loading Data: >> Data loaded >> Warning: You have demeaned your data, but at least one design column has >> non-zero mean >> ERROR: Program failed >> >> An exception has been thrown >> Runtime error:- detected by Newmat: process fails to converge >> >> MatrixType = Rect # Rows = 15; # Cols = 4 >> Trace: SVD; pinv. >> >> >> thanks in advance for any help >> >> Sandra >> >> >> 2012/7/31 Stephen Smith <[log in to unmask]> >> >>> Hi - these look - what was the error message? >>> >>> >>> On 30 Jul 2012, at 16:14, Sandra Petris wrote: >>> >>> Dear fsl experts, >>> >>> >>> I have a question regarding TBSS analysis. I would like to compute the >>> correlation (or regression) between FA and behavioral scores. >>> I have one group of subjects (15 subjects) and behavioral scores (BS) >>> taken from 3 tasks plus 1 regressors of no interest, age that I have >>> demeaned (is it correct?) >>> I assume that the design matrix should look like this: >>> >>> >>> >>> /NumWaves 5 >>> /NumPoints 15 >>> /PPheights 1 1 1 1 1 >>> /Matrix >>> 1 1,0434 1,1634 1,9836 -4,7333 >>> 1 0,3511 0,6998 0,6660 -6,7333 >>> 1 0,3733 0,1620 1,3627 4,2667 >>> 1 -0,7298 1,1634 0,9047 -3,7333 >>> 1 -0,3459 -0,1429 0,6176 -1,7333 >>> 1 -0,0511 0,1898 -0,1555 -3,7333 >>> 1 -0,0954 -2,1662 0,0961 -4,7333 >>> 1 -0,7031 -1,0768 -0,6896 -5,7333 >>> 1 0,3342 0,4163 -0,7304 9,2667 >>> 1 0,8755 -0,1218 -0,4432 -2,7333 >>> 1 -1,3132 -1,0332 0,5826 6,2667 >>> 1 0,4781 -0,9344 0,2008 -0,7333 >>> 1 -0,0692 0,1785 -1,1205 18,2667 >>> 1 0,6799 1,1634 -1,0984 1,2667 >>> 1 -0,8272 0,3381 -2,1765 -4,7333 >>> >>> >>> Is the following contrast matrix correct? >>> >>> >>> /NumWaves 5 >>> /NumContrasts 6 >>> /PPheights 1 1 1 1 1 >>> /Matrix >>> 0 1 0 0 0 >>> 0 -1 0 0 0 >>> 0 0 1 0 0 >>> 0 0 -1 0 0 >>> 0 0 0 1 0 >>> 0 0 0 -1 0 >>> >>> >>> When I run the randomize command I receive an error message.....are the >>> NumWaves/NumConntrast an PPWheights correct? >>> >>> Any help will be greatly appreciated >>> >>> >>> Best, Sandra >>> >>> >>> >>> >>> --------------------------------------------------------------------------- >>> Stephen M. Smith, Professor of Biomedical Engineering >>> Associate Director, Oxford University FMRIB Centre >>> >>> FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK >>> +44 (0) 1865 222726 (fax 222717) >>> [log in to unmask] http://www.fmrib.ox.ac.uk/~steve >>> >>> --------------------------------------------------------------------------- >>> >>> >>> >>> >> >> >> >> --------------------------------------------------------------------------- >> Stephen M. Smith, Professor of Biomedical Engineering >> Associate Director, Oxford University FMRIB Centre >> >> FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK >> +44 (0) 1865 222726 (fax 222717) >> [log in to unmask] http://www.fmrib.ox.ac.uk/~steve >> >> --------------------------------------------------------------------------- >> >> >> >> > > > --------------------------------------------------------------------------- > Stephen M. Smith, Professor of Biomedical Engineering > Associate Director, Oxford University FMRIB Centre > > FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK > +44 (0) 1865 222726 (fax 222717) > [log in to unmask] http://www.fmrib.ox.ac.uk/~steve > --------------------------------------------------------------------------- > > > >