[FieldTrip] problem with ft_volumerealign and ft_convert_coordsys

s.rombetto at cib.na.cnr.it s.rombetto at cib.na.cnr.it
Wed Jan 22 16:18:46 CET 2014

Dear Fieldtrippers,

I have downloaded the 20140114 version of Fieldtrip and tried again to
use the command ft_volumerealign in the following way (as suggested in
the tutorials)

mri =  ft_read_mri('*....\Subject01.mri');
cfg.method = 'interactive';
mri_realigned = ft_volumerealign(cfg, mri);

Then I identify it by pressing either n/l/r for fiducials and finally
I press q in order to quit. But no results appear on my screen.
Any suggestion to solve this?

I have tried to use also the following command
    [mri] = ft_convert_coordsys(mri, 'itab');

but I get the error message
   [mri] = ft_convert_coordsys(mri, 'itab');
??? Error using ==> ft_convert_coordsys at 102
conversion from ctf to itab is not yet supported

In order to better understand the problem, I have tried to perform a  
different transformation with the code

[mri] = ft_convert_coordsys(mri, 'spm', 2)
and I get the following message

Converting the coordinate system from ctf to spm
??? Undefined function or method 'spm' for input arguments of type 'char'.

Error in ==> align_ctf2spm at 121
   switch spm('ver')

Error in ==> ft_convert_coordsys at 90
             obj = align_ctf2spm(obj, opt);

Finally I tried to use the function align_itab2spm in the following way
mri = align_itab2spm(mri, 2)
but I get the error message

??? Undefined function or method 'spm' for input arguments of type 'char'.

Error in ==> align_itab2spm at 108
   switch spm('ver')

Do you have any idea or suggestion to solve this problem?

Thanks in advance for any advice,

  Dott.ssa Sara Rombetto
  Istituto di Cibernetica
  "E. Caianiello"
  Via Campi Flegrei, 34
  80078 Pozzuoli (NA)
  mob +39 3401689815
  tel +39 0818675361
  fax +39 0818675128
"I disapprove of what you say, but I will defend to the death your  
right to say
it." [Evelyn Beatrice Hall, The Friends Of Voltaire]

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