MC-Z will be independent of the number subjects. The z simulation assumes an infinite DOF.
doug Devdutta W wrote: > Here is the command line I am using. the same one was used both > times; only the glmdir was different. > > mri_glmfit-sim \ > --glmdir /data/zonda1/freesurfer_subjects/qdec/rh.area \ > --sim mc-z 5000 2 mc-z.abs.2 \ > --sim-sign abs \ > --overwrite > > > > On Wed, Jul 22, 2009 at 12:43 PM, Douglas N Greve > <gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>> wrote: > > What are your command lines? In general, it's a good idea to send > this each time, even if you're not sure it's useful. > > doug > > Devdutta W wrote: > > Hi, > I just ran the mri_glmfit-sim command on our data and there > were a couple of things I did not understand. We had > previously ran the same command on fewer subjects and it had > taken about 10 days to run. This time around it only took 2 > days even though we had more subjects (there don't seem to be > any errors; it just finished sooner). > Another thing I noticed was that previously the command wrote > several folders (ones that measured thickness, sulc, area, > etc. both average and difference between the subject groups) > into the output folder we specified in the "glmdir" option. > This time it only wrote one (just the average thickness). > > As far as I can tell, I followed the command exactly as before > (copied and pasted the command) with the same number of > interations. I also followed the Group Analysis tutorial from > the wiki. > Can anybody shed some light on this? Why this discrepancy > between the two? > > Thank you, > Devdutta > > ------------------------------------------------------------------------ > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > <mailto: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 <mailto: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 > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > > > -- 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
