Thanks a lot Bruce! Using the sphere surface was what I was missing. Christian
On Feb 4, 2014, at 12:16, Bruce Fischl <fis...@nmr.mgh.harvard.edu> wrote: > it's the ?h.sphere so that folding isn't an issue > On Tue, 4 Feb 2014, Martin Luessi wrote: > >> Hi Bruce, >> >> Thanks for your reply. This makes sense. One remaining question is which >> surface is used to compute the eigen-axis, is it the white surface? >> >> Best, >> >> Martin >> >> On 02/03/14 15:27, Bruce Fischl wrote: >>> Hi Christian and Martin >>> >>> mris_divide_parcellation finds the primary eigen-axis of the >>> parcellation along the cortical surface, then splits it up into as many >>> units as specified (either enough to get it under the area threshold, or >>> explicitly specifed in a split file) >>> >>> cheers >>> Bruce >>> >>> p.s. the code is open source so you are always welcome to grab it and >>> take a look >>> >>> On Mon, 3 Feb 2014, Martin Luessi wrote: >>> >>>> I'm wondering about this as well. It would be great if someone who is >>>> familiar with the FreeSurfer code could explain the split algorithm. >>>> >>>> Best, >>>> >>>> Martin >>>> >>>> >>>> On 01/29/14 14:36, Christian Brodbeck wrote: >>>>> Dear Freesurfer developers, >>>>> >>>>> I am trying to replicate mris_divide_parcellation for mne-python >>>>> (https://github.com/mne-tools/mne-python/pull/1085). I think I am >>>>> doing the same as the MRISdivideAnnotationUnit function >>>>> (https://github.com/neurodebian/freesurfer/blob/master/utils/annotation.c#L473), >>>>> but the result still looks different. Could someone point out how >>>>> exactly the split is done, and if there are any steps in addition to >>>>> the function? Are there any measures that are taken when the split >>>>> would result in two disconnected regions belonging to the same label? >>>>> And what surface is the split performed on (I would assume that would >>>>> be “white”)? >>>>> >>>>> Thank you! >>>>> >>>>> Christian >>>>> _______________________________________________ >>>>> Freesurfer mailing list >>>>> Freesurfer@nmr.mgh.harvard.edu >>>>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer >>>>> >>>>> >>>> >>>> >>>> _______________________________________________ >>>> Freesurfer mailing list >>>> Freesurfer@nmr.mgh.harvard.edu >>>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer >>>> >>>> >>>> >> >> >> > > > The information in this e-mail is intended only for the person to whom it is > addressed. If you believe this e-mail was sent to you in error and the e-mail > contains patient information, please contact the Partners Compliance HelpLine > at > http://www.partners.org/complianceline . If the e-mail was sent to you in > error > but does not contain patient information, please contact the sender and > properly > dispose of the e-mail. _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
