This is a strange error that I cannot figure out from the terminal 
output. What version of FS are you using? Here's something you can try:

Run selxavg3-sess with --monly sxa3.m This will return right away having 
created sxa3.m

Start matlab and run sxa3. It will stop at the error below. Then type

flac0.inorm

gmean

Each of these will print something out to the terminal. Send the results 
to the list

doug


On 06/02/2014 06:27 AM, pfannmo...@uni-greifswald.de wrote:
> Dear Experts,
>
> during an fsfast analysis an error occured after selxavg3-sess was executed. 
> The corresponding commands were:
>
> mkanalysis-sess -fsd bold -surface self lh -fwhm 0 -event-related -paradigm 
> sensory.par -nconditions 1 -spmhrf 0 -TR 2 -refeventdur 10 -nskip 8 -polyfit 
> 2 -analysis analysis.lh -delay 0 -per-run -force -mcextreg
> mkcontrast-sess -analysis analysis.lh -contrast stim-v-base -a 1
>
> selxavg3-sess -s ./sessdir -analysis analysis.lh -no-preproc -force
>
>
>
> The output of selxavg3-sess was:
>
>
> sxa3pwd =
>
> /.../evaluation
>
> sxa3cmd =
>
> /usr/local/freesurfer/fsfast/bin/selxavg3-sess -s ./sessdir -analysis 
> analysis.lh -no-preproc -force
>
>>> /usr/local/freesurfer/fsfast/toolbox/fast_selxavg3.m
> #@# sessdir ###############################
> /.../evaluation/sessdir
> -------------------------
> $Id: fast_selxavg3.m,v 1.100.2.2 2012/11/30 18:40:38 greve Exp $
> /usr/local/freesurfer/fsfast/toolbox/fast_selxavg3.m
> /usr/local/freesurfer/fsfast/toolbox/fast_ldanaflac.m
> /usr/local/freesurfer/matlab/MRIread.m
> -------------------------
> outtop = /.../evaluation
> Extension format = nii.gz
>   1 stim-v-base.mat
> Excluding 8 points
> nruns = 1
> autostimdur =
>
>
> outanadir = /.../evaluation/sessdir/bold/analysis.lh
> Excluding 8 points
> Found 145573/155188 (93.8) voxels in mask
> Creating Design Matrix
>   ... creation time =  0.008 sec
> DoMCFit = 1
> ntptot = 108, nX = 15, DOF = 93
> Saving X matrix to /.../evaluation/sessdir/bold/analysis.lh/Xtmp.mat
> XCond = 64.7067 (normalized)
> Computing compensation for resdual AR1 bias
>   1  -0.5  -0.468819    (t=0.005249)
>   2  -0.25  -0.252194    (t=0.007053)
>   3  0  -0.0449419    (t=0.008126)
>   4  0.25  0.149516    (t=0.00935)
>   5  0.5  0.319324    (t=0.010795)
> AR1 Correction M: 0.0749452 1.26122
> Computing contrast matrices
> OLS Beta Pass
>    run 1    t= 0.0
>      Global Mean
> Global In-Mask Mean =  (0.664951)
> ??? Error using ==> mrdivide
> Matrix dimensions must agree.
>
> Error in ==> fast_selxavg3 at 434
>      RescaleFactor = flac0.inorm/gmean;
>
>>> ------------------------------------------
> ERROR: fast_selxavg3() failed\n
>
>
> Do you have an idea what went wrong?
>
> Sincerely yours pfannmoe
> _______________________________________________
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> 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

Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2
www.nmr.mgh.harvard.edu/facility/filedrop/index.html
Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/

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