Hi Maya, the problem is that the wm.dat file, by default, only has one 
column (just the mean of the WM). It is possible to have the top N 
principle components in the wm.dat file, but this needs to be set up 
when you configure the WM fcseed (it does not really help much). The 
same goes for VCSF. Try just using 1 (ie, -nuisreg wm.dat 1).
doug

Maya Rosen wrote:
> Hi all,
>
> We've been trying to use FsFast for functional connectivity analysis 
> using the left hippocampus as the seed (isolated from aseg). We used 
> the following command to make the analysis:
>
> mkanalysis-sess -fwhm 0 -fsd bold -mcextreg -polyfit 2 -TR 2.6 
> -analysis lhippo_fcfsfast-analysis -nuisreg wm.dat 3 -nuisreg vcsf.dat 
> 3 -nuisreg global.waveform.dat 1 -taskreg l_hippo.dat 1 -notask -native
>
> Note that we specified -notask. This ran fine.
>
> We then tried to run selxavg3-sess using this command:
>
> selxavg3-sess -s . -a lhippo_fcfsfast-analysis/ -no-preproc -no-con-ok
>
> and get this error:
>
> ERROR: not enough columns 
> /r2/users/fspace2/RestData/091208RU_MR/bold/020/wm.dat
>
> ans =
>
>    116     1
>
> This file has one column. And I assume that it is looking for multiple 
> columns with which to do contrasts. However, this is resting-state 
> data so there are no contrasts. Looking deeper into the selxavg3-sess 
> code it seems that the -no-con-ok flag sets RequireContrast to 0. 
> However, this does not get transferred to fast_selxavg3.m. DoContrasts 
> = 1 in fast_selxavg.m. I think this is the problem. Any help would be 
> greatly appreciated!!!
>
> Maya
> ------------------------------------------------------------------------
>
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-- 
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
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