Hi, I am sorry to disappoint you. I wrote another srcipt to compute the centroid in order to clarify whats happening. The centroid computed by the script is in the center of the cluster. However, the differences could be due to details of the computation. I was not able to unriddle all the details in the freesurfer code. Probably I am going to keep this script since it fits what I would like to compute. Before I forget about it, I use freesurfer 5.3.
Greetings pfannmoe On Wed, 9 Apr 2014 08:33:26 -0400 (EDT) Bruce Fischl <fis...@nmr.mgh.harvard.edu> wrote: > Hi Jeorg > > if the cluster is non-convex, the centroid is not guaranteed to be in the > interior. Think of a C or U shape. > > cheers > Bruce > On Wed, 9 Apr 2014, Joerg Pfannmoeller > wrote: > > > On Mon, 07 Apr 2014 12:02:24 -0400 > > Douglas N Greve <gr...@nmr.mgh.harvard.edu> wrote: > > > > > >> Is this group data? Or otherwise on fsaverage? Or on the subject's > >> surface? > > > > It is on a single subject on its on anatomy (self). > > > >> How are you determining that the centroid is outside of the > >> cluster? > > > > The coordinates are outside the cluster, there is nothing to worry about > > that. > > > >> It should give you a vertex number for the centroid (I think). > > > > As you told in your last mail it gives Tal-coordinates and not vertices. > > > >> I opted not to use the centroid by default for this reason. This can > >> happen because the centroid is irregular. > > > > I don not understand this: What do you mean by irregular? > > > > _______________________________________________ > > 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
