Hi FS list,

I have some infant native space cortical surfaces generated by another software package. I would like to 'paint' them with some volumetric ROIs also in the native space.

I noticed that mri_vol2surf has the "--vol2surf" option, which does not require typical FS output directory structure.

I first converted the vtk surfaces from the other software to FS format. Here, the left hemi surface is called lh.pial and the corresponding volume is subject-168-T1w-iso.mgz (also used as regheader volume). I'm trying abs distance projection with 5mm distance, no projmap (0 as dummy var), and nearest neighbor interp.

I get the errors below. My first guess is that using the native volume as the 'reg' argument is the issue, but any feedback is welcome!

Searched a bit, but the "could not allocate xforms" error only comes up in one other thread on the listserv, and it's about mri_convert, not mri_vol2surf.

Thanks,

Jim H.

mri_vol2surf --vol2surf \

/mnt/f/iBEAT_longitudinal_format/1433/1433_V2/subject-168-T1w-iso.mgz \

 /mnt/f/iBEAT_longitudinal_format/1433/1433_V2/surf/lh.pial  \ 

0 \ 

5 \ 

0  \ 

/mnt/f/iBEAT_longitudinal_format/1433/1433_V2/subject-168-T1w-iso.mgz \ 

novsm \ 

0 \ 

/mnt/f/iBEAT_longitudinal_format/1433/1433_V2/surf/lh.surf_ROIs

error: Cannot allocate memory
error: LTAalloc(1085915240): could not allocate xforms