how was pial-outer-smoothed create?

On 7/1/2019 2:33 PM, Nillo, Ryan Michael R wrote:
Hi Doug,

lh.test.nii was created with:

mri_vol2surf --mov ./misc/lh.probability.nii --trgsubject fsaverage_1 
--regheader fsaverage_1 --hemi lh --fwhm 30 --surf pial-outer-smoothed --o 
./lh.test.nii

Where lh.probability.nii is a probability mask created from about 63 subjects.

Thanks in advance for the help,

Ryan Michael Nillo
Staff Research Associate I
University of California San Francisco
Department of Radiology and Biomedical Imaging

On Jul 1, 2019, at 11:13 AM, Greve, Douglas N.,Ph.D. 
<dgr...@mgh.harvard.edu<mailto:dgr...@mgh.harvard.edu>> wrote:

Who did you create lh.test.nii?

On 7/1/2019 1:47 PM, Nillo, Ryan Michael R wrote:
Hi Bruce,

We wanted to map values from a previous analysis to a representation of the 
brain with the sulci filled — something that resembles the output 
lh.pial-outer-smoothed from the recon-all -localGI. I tried using 
mri_surf2surf, but I get the error:

ERROR: dimension inconsistency in source data
       Number of surface vertices = 163842
       Number of value vertices = 73466

My command: mri_surf2surf --srcsubject fsaverage_1 --trgsubject fsaverage 
--sval ./lh.test.nii --tval lh.pial-outer-smoothed2white.nii --hemi lh

fsaverage_1 is a copy of fsaverage that I ran recon-all -localGI on to get the 
pial-outer-smoothed surface.
Ryan Michael Nillo
Staff Research Associate I
University of California San Francisco
Department of Radiology and Biomedical Imaging

On Jul 1, 2019, at 10:27 AM, Bruce Fischl 
<fis...@nmr.mgh.harvard.edu<mailto:fis...@nmr.mgh.harvard.edu>> wrote:

Hi Ryan

I'm not sure why you would have a surface with 73K vertices on fsaverage. Why 
not use one of the ico representations (40K or 160K vertices)? In any case, 
mri_surf2surf should do the trick, although you will probably need to create a 
new subject with a set of 73K vertex surfaces

cheers
Bruce
On Mon, 1 Jul 2019, Nillo, Ryan Michael R wrote:

Hello Freesurfer users/developers,
I have surface with ~73,400 vertices generated from the Freesurfer version 6
fsaverage brain, left hemisphere. I have a surface map that was created by
mapping a volume to the fsaverage white surface. Is there a way to map the
surface map to the new surface with less vertices? Is there a way to map
values from the 73,000 vertices-map to the standard fsaverage pal surface?
Thanks in advance,
Ryan Michael Nillo
Staff Research Associate I
University of California San Francisco
Department of Radiology and Biomedical Imaging
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