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Hi - FSL uses Analyze format images like those in the FEEDS example data set. These have a pair of files for each 3D/4D data set - a .img data file and a .hdr header file. The results you have got with the FEEDS test are actually fine - it is just that some of the F-test checks now fail because we changed (patched) the F-test part of FEAT recently (but haven't yet updated FEEDS data to match this software change). Thanks, Steve. On Tue, 20 Aug 2002 [log in to unmask] wrote: > Hello, This is Heather Emmerton in the department of psychiatry at > the University of British Columbia in Vancouver, Canada. We have > just downloaded and are hoping to use your FSL tools for our MRI > neuroimaging studies in schizophrenia patients. We are working > with Mac OS X (10.1.5). I have downloaded and am running FSL > on XDarwin so that we may use the GUI tools. Mainly I am having > trouble using the FSL tools with our data, I am encountering > "unable to open (data file)" errors, even using raw data. Do you > have a document outlining the actual usage of the gui tools? For > example how to specify data format, and which formats can be > used? I have run the evaluation example data suite and most of > the tools function within error tolerances, but not all. I am > wondering if you have advice for correcting the errors in the failed > tests for FEAT? I have included the entire output of the evaluation > data run as an html attachment. > I can be contacted at: > (604) 875-4111 ext 61705 > or via this email ([log in to unmask]) > Thank you in advance for your help. > Heather > > Stephen M. Smith Head of Image Analysis, FMRIB Oxford University Centre for Functional MRI of the Brain John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK +44 (0) 1865 222726 (fax 222717) [log in to unmask] http://www.fmrib.ox.ac.uk/~steve