Dear Obi,
5 3D images is a very small number to try and run Melodic on.
What are you trying to do?
All the best,
Mark
On 7 Dec 2011, at 16:37, Obi Obayashi wrote:
> Hi All
>
> I'm a new user to FSL's Melodic software suite and am currently having issues getting it to run on my data. I'm using the GUI for Melodic on a 4D dataset made up of 5 3D MRI volumes and am getting the following error in the report_log.html:
>
>
> ...
> /usr/local/fsl/bin/fslmaths filtered_func_data -Tmean mean_func
>
> /bin/rm -rf prefiltered_func_data*
>
>
>
> An exception has been thrown
> Logic error:- detected by Newmat: index error: requested index = 2
>
> MatrixType = Rect # Rows = 1; # Cols = 1
>
>
> Melodic Version 3.10
>
> Melodic results will be in filtered_func_data.ica
>
> Create mask ... done
> Reading data file filtered_func_data ... done
> Estimating data smoothness ... done
> Removing mean image ... done
> Normalising by voxel-wise variance ... done
> Excluding voxels with constant value ... done
>
>
> ...
>
> At this point, the program seems to hang forever which I'm assuming is due to the index error. I've checked using fslview, fslhd and fslinfo that this is indeed a 4D data matrix (176 x 256 x 35 x 5 voxels) and is a NIFTI format file. The following is the header information from fslhd:
>
> sizeof_hdr 348
> data_type FLOAT32
> dim0 4
> dim1 176
> dim2 256
> dim3 35
> dim4 5
> dim5 1
> dim6 1
> dim7 1
> vox_units mm
> time_units s
> datatype 16
> nbyper 4
> bitpix 32
>
>
> Running fslstat -r -R yields the following intensity ranges:
>
> 0.000 0.747 0.000 3.039
>
>
> Trying to run this from a MacOSX 10.6 running melodic 3.10, FSL 4.1.6.
>
> Any help with this would be greatly appreciated!
>
> Thanks in advance!
>
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