Hi - no, ignore the FLIRT warnings.
The FLAME warnings are of more concern - this almost always means that you
have very strong outliers in your data input to FLAME. One thing to check
is to load the .gfeat/cope? images into fslview and flick through the
timepoints to check for outliers.
Cheers, Steve.
On Fri, 9 Dec 2005, Cherif Sahyoun wrote:
> Hi!
>
> 2 errors I am getting when running high level analyses in Feat:
> - same as in my previous email, everytime flirt is called, I get an error
> stating
> WARNING: Both reference and input images have an sform matrix set
> The output image will use the transformed sform from the reference image
> This happens both in low level and high level analyses (more details in my
> previous message)
>
> the reason I am repeating this is it may be related to the following
> warnings I get in high level stats:
>
> WARNING: FLAME stage 2 has given an abnormally large difference to stage 1
> x=50,y=92,z=41
> vox=173818
> zts[0](vox)=7.7325
> zemlowerts[0](vox)=4.62063
> beta_mean[0](vox)=2.73318e-05
> beta_b[0](vox)/beta_c[0](vox)=1.00022e-10
>
> WARNING: FLAME stage 2 has given an abnormally large difference to stage 1
> x=50,y=92,z=42
> vox=173819
> zts[0](vox)=7.99212
> zemlowerts[0](vox)=4.7153
> beta_mean[0](vox)=2.73318e-05
> beta_b[0](vox)/beta_c[0](vox)=1.00022e-10
>
> I get MANY iterations like these before the analysis finally ends (in
> >24hrs!), and am not sure at all what this means or if it's normal...
>
> any views?
>
> thx!
> cherif
>
--
Stephen M. Smith DPhil
Associate Director, FMRIB and Analysis Research Coordinator
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
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