Hi Jed, that means that your label was created in the volume. If you load it in tksurfer it will sample it onto the surface and fill in the vertex numbers. Then you can save it and you should be all set.
cheers Bruce On Thu, 6 May 2010, Jed Singer wrote: > Hello again! > > I've got a bunch of brain scans, each having in the neighborhood of > 100 points I'm interested in (corresponding to subdural electrode > locations). I've also got an .aparc.annot file that has nicely divided > up the cortex into (hopefully) meaningful regions. I also have a bunch > of labels, each marking one of the interesting points. I would like to > know in which region each of those labels sits. > > What I was hoping to do: > call read_annotation on the .apparc.annot file > read the vertex numbers from the labels using read_label > index those vertex numbers into the label field returned by > read_annotation > index those label numbers into the fifth column of colortable.table > index those table rows into colortable.struct_names > smile happily > > What I have actually done: > call read_annotation on the .apparc.annot file > read labels using read_label > notice that all the vertex numbers on all the labels that I have ever > made are -1 > try unsuccessfully to figure out what that means > hunt unsuccessfully for any way of converting what I believe to be RAS > coordinates from columns 2-4 of the read_label output into vertex > numbers > in desperation, throw myself upon the mercy of the wise people who > frequent this mailing list. > > I'd be insanely grateful if someone could point me in the right > direction. I bet there's something really simple and stupid and > obvious, but I'm still a novice with this software and everywhere that > I've even been able to think to look has come up a dead end. > > Thanks so much! > Jed > _______________________________________________ > 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.
