problem with volume_segment
K.Nazarpour at BHAM.AC.UK
Mon Apr 21 17:49:38 CEST 2008
I have had similar problem for some weeks. I have checked everything and
really can't figure out where the problem is.
As I posted earlier, if I simply ran SPM, volume segmentation can be
done in SPM. However, if through simialr MATLAB platform (dll), vol
segmentation is called from FT, the error comes up.
Robert Oostenveld wrote:
> Dear Luis,
> Fieldtrip makes use of SPM2 (i.e. SPM version 2) for the segmentation.
> The segmentation is then used to construct a volume conduction model.
> There are some incompatibilities between SPM2 and later versions. Please
> check that you have the correct version of SPM.
> For segmenting, a temporary file is written to disk and then SPM is
> called. Although I am not an expert on SPM, the error message "??? Cant
> map image file" seems to indicate that there is a problem with reading
> the temporary file. You can use the matlab debugger to stop on the line
> where you encounter the problem and look at the problem in more detail.
> best regards,
> On 17 Apr 2008, at 19:08, Luis Morán wrote:
>> Hi all!!
>> I'm working on the tutorial "Applying beamforming techniques in the
>> frequency domain". Whe I've tried to run next lines:
>> mri = read_fcdc_mri('Subject01.mri');
>> cfg = ;
>> cfg.template = 'C:\Users\Luisiyo\Documents\Teleco\Beca
>> cfg.name = 'segment';
>> cfg.write = 'yes';
>> cfg.coordinates = 'ctf';
>> [segmentedmri] = volumesegment(cfg, mri);
>> I've got the following errors:
>> performing the segmentation on the specified volume
>> ??? Cant map image file.
>> Error in ==> spm_smoothto8bit>smoothto8bit at 51
>> img = spm_slice_vol(V,spm_matrix([0 0 i]),V.dim(1:2),0);
>> Error in ==> spm_smoothto8bit at 14
>> VO = smoothto8bit(V,fwhm);
>> Error in ==> spm_segment>get_affine_mapping at 233
>> VFS = spm_smoothto8bit(VF(1),aflags.smosrc);
>> Error in ==> spm_segment>init_sp at 567
>> MM = get_affine_mapping(VF,PG,flags.affreg);
>> Error in ==> spm_segment at 91
>> SP = init_sp(flags.estimate,VF,PG);
>> Error in ==> volumesegment at 250
>> Could anyone help me??
>> Thank you in advance for any help you can give
>> Luis Morán
>> The aim of this list is to facilitate the discussion between users of
>> the FieldTrip toolbox, to share experiences and to discuss new ideas
>> for MEG and EEG analysis.
> The aim of this list is to facilitate the discussion between users of
> the FieldTrip toolbox, to share experiences and to discuss new ideas
> for MEG and EEG analysis. See also
> http://listserv.surfnet.nl/archives/fieldtrip.html and
The aim of this list is to facilitate the discussion between users of the FieldTrip toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/fcdonders/fieldtrip.
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