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Hi - this may be because you have so few time points - you can't really do prewhitening in this case. The next version will have a button to turn this off in such cases, but for the moment, you could try editing $FSLDIR/tcl/feat.tcl and change the film_gls call: replace "-sa -ms 5 -sp $FSLDIR/bin/susan_smooth" with "-noest" (but DON'T forget to put it back afterwards!!) regards, Steve. On Fri, 13 Sep 2002, Erik-Jan Vlieger wrote: > Hi, > > I keep running into errors, and I don't know what is causing them. Can anone > shed some light on the following report.log ? > Thanks, > Erik-Jan Vlieger > ----------------------- > report.log: > > Total original volumes = 22 > /usr/local//bin/avwroi /Proj/FA/n2_10_s1_12_fa > /Proj/FA/n2_10_s1_12_fa.feat/example_func 11 1 > > /usr/local//bin/ip /Proj/FA/n2_10_s1_12_fa > /Proj/FA/n2_10_s1_12_fa.feat/filtered_func_data 1 -s 2.12314225053 -m > /Proj/FA/n2_10_s1_12_fa.feat/mask -I 10000 > rm -rf /Proj/FA/n2_10_s1_12_fa.feat/prefiltered_func_data* > > /usr/local//bin/film_gls -rn /Proj/FA/n2_10_s1_12_fa.feat/stats -sa -ms 5 -sp > /usr/local//bin/susan_smooth /Proj/FA/n2_10_s1_12_fa.feat/filtered_func_data > /Proj/F > A/n2_10_s1_12_fa.feat/design.mat 5.310360 > Log directory is: /Proj/FA/n2_10_s1_12_fa.feat/stats > Loading image... Completed > Applying threshold to Series... Completed > Calculating residuals... > Completed > Estimating residual autocorrelation... > Calculating raw AutoCorrs... Completed > > > An exception has been thrown > Logic error:- detected by Newmat: index error: requested index = 1 > > MatrixType = Rect # Rows = 0; # Cols = 1 > Trace: Histogram::generate; AutoCorrEstimator::spatiallySmooth. > > -- > Erik-Jan Vlieger > Academic Medical Center > Dept. of Radiology, G1-209 > P.O. Box 22660 > 1100 DD Amsterdam > The Netherlands > email: [log in to unmask] > Phone: +31 20 5664975 > Fax: +31 20 5669753 > 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