you can use mri_surf2surf to convert a .w file to another format

On 03/15/2017 12:33 PM, Bruce Fischl wrote:
> I see. We don't really support w files anymore. Can you write it out
> as a .mgz/.mgh instead? Have sourcedata be nvertices x 1 x 1 x
> ntimepoints and use MRIwrite or save_mgh
>
> On Wed, 15 Mar 2017, Dorothy Sincasto wrote:
>
>> Hi Bruce,
>> first I do:
>>
>> [vertex_coords, faces, magic] =
>> read_surf('rh.13475.midthickness.decimated.05.surf')
>>
>> I have a time series variable sourcedata =  6149X 149646. Is a double
>> and
>> the numbers are in the range of -1.181711152525857e-14
>>
>> then i try to write it:
>>
>> write_wfile(/'path/rh.13475.midthickness.decimated.05.MEG.mgz',sourcedata,
>>
>> vertex_coords),
>>
>>  and I get this error:
>>
>> Error using bitshift
>>
>> Double inputs must have integer values in the range of ASSUMEDTYPE.
>>
>>
>> Error in fwrite3 (line 26)
>>
>> b1 = bitand(bitshift(val, -16), 255) ;
>>
>>
>> Error in write_wfile (line 58)
>>
>>   fwrite3(fid, v(i)) ;          % vertex number (0-based)
>>
>>
>>
>> Thanks
>>
>> Dorothy
>>
>>
>> On Tue, Mar 14, 2017 at 7:28 PM, Bruce Fischl
>> <fischl@nmr.mgh.harvard.edu>
>> wrote:
>>       Can you send us the full command you ran and the full screen
>>       output?
>>
>>       Thanks
>>       Bruce
>>
>>       > On Mar 14, 2017, at 9:33 PM, Dorothy Sincasto
>>       <dsincasto@gmail.com> wrote:
>>       >
>>       > Hi,
>>       >
>>       > I have MEG time series for every vertex in a decimated surface
>>       (~6000 vertices). I want to create a file (i think is called
>>       overlay) in which the timeseries are saved, like an fMRI mgz
>>       overlay. How can I do that with matlab?
>>       >
>>       > I have tried read_surf for reading the midthickness surface
>>       file, and then using the vertex coordinates and the MEG time
>>       series variable as input for write_wfile. however i get the
>>       error:
>>       >
>>       > Error using bitshift
>>       > Double inputs must have integer values in the range of
>>       ASSUMEDTYPE.
>>       >
>>       > Error in fwrite3 (line 26)
>>       > b1 = bitand(bitshift(val, -16), 255) ;
>>       >
>>       > Error in write_wfile (line 58)
>>       >   fwrite3(fid, v(i)) ;          % vertex number (0-based)
>>       >
>>       > It seems that's not the function I need to use.
>>       >
>>       > Thanks
>>       > Dorothy
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--
Douglas N. Greve, Ph.D.
MGH-NMR Center
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