Hi Zhivago
1) You can project from inside the ?h.white surface if projfrac<0 and
outside pial if projfrac>1. <<0 and >>1 won't make much sense though as it
starts to get arbitrary.
2) The default projfrac, as documented in the -help response, is 0.
3) Yes, 0-->white matter boundary. 1--> pial boundary.
4) The .mgh/.mgz file create by vol2surf is an nvertices x 1 x 1 vector,
which is a scalar field over the surface.
cheers
Bruce
On Sun, 15 Jan 2017, Zhivago wrote:
Hi,
I do not have a good understanding of the mri_vol2surf command.
1) Can this only project the part of the volume that lies between the white
& pial matter?
2) What is the default projection parameter that it uses?
3) Does projection always start from the white matter, i.e. is 0 the white
matter surface?
4) What is the nature of the mgh file that is created by:
mri_vol2surf --src mri/spmT_0002.img --regheader s04 --interp nearest
--hemi lh --o lh.sig.mgh
Thanks,
Zhivago...
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