Try using --projfrac 0.5 (halfway into the ribbon). --projfrac 1 samples at the pial, and it may be that you don't have any voxels there. Still, one would expect a few hits. Also, the paint (w) format is pretty old. Consider using mgh format or gifti. doug
On 1/16/13 9:55 AM, Rouhollah Abdollahi wrote:
Dear Freesurfer,
I have created a ribbon in high resolution like 0.5 x 0.5 x 0.5 mm^3 I selected some of those voxel in the high-res ribbon file. Then I wanted to create a paint file out of volume in that resolution on white or pial. I used the tkregister to register the high-res ribbon file to anatomy. then I used
"mri_vol2surf --src seeg_in_ribbon.nii --src_type t1 --srcreg register3.dat --hemi rh --projfrac 1 --out ./seeg_in_ribbon_surface.w --out_type paint --surf pial"
to project the volume on surface! but unfortunately I did not get any hits! I already know I should get some vertices but nothing is there!?
INFO: output format is paint srcvol = seeg_in_ribbon.nii srctype = t1 srcreg = register3.dat srcregold = 0 srcwarp unspecified surf = pial hemi = rh ProjFrac = 1 thickness = thickness reshape = 0 interp = nearest float2int = round GetProjMax = 0 INFO: float2int code = 0 Done loading volume Reading surface /data/local/PROJECT/subj1/surf/rh.pial Done reading source surface Reading thickness /data/local/PROJECT/subj1/surf/rh.thickness Done Mapping Source Volume onto Source Subject Surface 1 1 1 1 using old Done mapping volume to surface Number of source voxels hit = 122086 Warning: all vertex values are zero
-- Best Regards Rouhollah Abdollahi
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