Yes - it's quite likely suboptimal or worse to mix things up in this
way. I would recommend just re-running the first-level analyses with
3.3.
Cheers.
On 31 May 2007, at 00:04, James Kyle wrote:
> We have some first level analysis 1/2 was run with fsl3.2 and is in
> analyze format (.hdr/.img), the other 1/2 was run with 3.3 and is
> in compressed nifti format (nii.gz)
>
> Off the bat, I'm wondering if this is a "Bad Idea(TM)". I'm
> consistently getting an $fmri(VOLUME$rawstats) value of 0, which in
> turn causes gnuplot to error out when creating the tsplots.
>
> Looks something like this:
>
>> /Volumes/local/fsl-testing/bin/smoothest -d 13 -m mask -r stats/
>> res4d > stats/smoothness
>> WARNING: Extreme smoothness detected in X - possibly biased global
>> estimate.
>> WARNING: Extreme smoothness detected in Y - possibly biased global
>> estimate.
>> WARNING: Extreme smoothness detected in Z - possibly biased global
>> estimate.
>>
>> rm -f stats/res4d*
>>
>> /Volumes/local/fsl-testing/bin/avwmaths stats/zstat1 -mas mask
>> thresh_zstat1
>>
>> echo 0 > thresh_zstat1.vol
>> zstat1: DLH=nan VOLUME=0 RESELS=nan
>>
>> /Volumes/local/fsl-testing/bin/avwmaths stats/zstat2 -mas mask
>> thresh_zstat2
>>
>> echo 0 > thresh_zstat2.vol
>> zstat2: DLH=nan VOLUME=0 RESELS=nan
>> ..........
>>
>> mkdir tsplot
>>
>> /Volumes/local/fsl-testing/bin/tsplot . -f filtered_func_data -o
>> tsplot
>>
>> gnuplot> plot 'tsplot/tsplot_zstat1.txt' using 1 title 'data' with
>> lines , 'tsplot/tsplot_zstat1.txt' using 2 title 'cope partial
>> model fit' with lines , 'tsplot/tsplot_zstat1.txt' using 3 title
>> 'full model fit' with lines
>>
>>
>>
>> ^
>> line 0: Can't plot with an empty y range!
>>
>> convertb: Not a GIF image file (./magicsOMaZK).
>> convertb: Missing an image file name.
>
> Is this indicative of a problem with the design or could it be a
> result of our mixed input formats?
>
> -james
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Stephen M. Smith, Professor of Biomedical Engineering
Associate Director, Oxford University FMRIB Centre
FMRIB, JR 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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