There was a bug with mris_make_face_parcellation that merged some of the rois together when you tried to run the command twice to subdivide the parcellations further. So if you want to use it for this purpose make sure you use the newest version as it has been fixed now.
Best, Maritza
On Tue, 18 Jun 2013, Bruce Fischl wrote:
Hi Jeff
there are two utilities we provide for this (and yes, David is always correct!):
- mris_make_face_parcellation - create approximately unifom-sized parcels
using icosahedral subdivisions. These can be uniform in the native space using the ?h.sphere, or in register and uniform in the group space using ?h.sphere.reg.
- mris_divide_parcellation - divides an existing annotation file (e.g.
lh.aparc.annot) either with a specific set of divisions specified by the user, or so that no individual parcel is greater than a specified surface area.
cheers Bruce
On Tue, 18 Jun 2013, Jeff Eriksen wrote:
I just attended the pre-OHBM FSL/FS course, and spoke to David Salat there about possibilities to create more detailed sub-parcellationsfrom the two major structural atlases. Could someone please let me know if David was right that such tools exist, and/or point me to them?
My goal is essentially to create relatively equal-area parcellations with say 100, 200, 500, 1000, 2000, 5000, etc. ROIs per hemisphere, retaining some type of labeling to indicate where each ROI came from.
Thanks, -Jeff
PS I am at the HBM meeting through mid-day Thursday if someone here is able to talk to me in person (maybe even David!). My cell is 971-533-3942 if someone in Seattle wants to call or text.
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