Hi
So ‘C/subj_011/SE9/rest’ is the complete path to your input file? If so then I suggest pre-processing all data separately and running melodic from the command line instead… then it’s easier to figure out if the pre-processing or the melodic I/O is not happy…
hth
Christian
On 17 Apr 2014, at 16:28, Broulidakis M.J. <[log in to unmask]> wrote:
> Dear FSL experts,
>
> I desperately need your help! I am trying to preform group ICA on resting state data using Melodic and have been running into a serious difficulty. While melodic seems to work fine for single subject analysis or even group ICA on only a limited number of participants it is unable to run my entire data set (n=73).
>
> At the very start of the analysis the progress report appears to freeze at:
>
> /bin/cp /tmp/feat_5cCO9X.fsf design.fsf
>
> mkdir .files;cp /Applications/fsl/doc/fsl.css .files;ln -s /Applications/fsl/doc/images .files/images
>
> Melodic progress report for the first subject generates this error message:
>
> /Applications/fsl/bin/fslmaths C/subj_011/SE9/rest prefiltered_func_data -odt float
> Cannot open volume C/subj_011/SE9/rest for reading!
>
> FATAL ERROR ENCOUNTERED
> Cannot open volume C/subj_011/SE9/rest for reading!
> while executing
> "if { [ catch {
>
> for { set argindex 1 } { $argindex < $argc } { incr argindex 1 } {
> switch -- [ lindex $argv $argindex ] {
>
> -I {
> incr argin..."
> (file "/Applications/fsl/bin/feat" line 119)
>
> I have no idea what it means by “cannot open volume for reading” because, as mentioned previously, the dataset (including subj_011) works fine for many other types of analysis. If anyone else has had a similar problem or may suspect what the matter is please let me know.
>
> Thanks in advance and a happy Easter,
>
> John
>
> --------------------
>
> John Broulidakis
> Developmental Brain-Behaviour Laboratory
> University of Southampton
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