Hi Cornelius

 

I found something that computes the overlap of labels across the same vertex when doing some research about this, not sure if this is what you mean:

 

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See specifically:

--nhits

<nhits_file>

This option creates a diagnostic file showing whether the cumulative effect of all the label files happens to assign more than one label to each vertex. The output file is a FreeSurfer 'overlay' format file, in which each vertex has an associated value, in this case the count of labels assigned to that vertex. This can be displayed in tksurfer as a color. Setting fthresh to 1.5 will distinguish good vertices (count<=1) from bad (count>=2).

 

I know there is also a command merge_labels that may help?

 

Best,

 

 

 

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Dear freesurfers,

 

is there an elegant way of computing the intersection or overlap of different labels or - which would be even more useful for my application - annotations?

 

I only managed to find labels_intersect (which appears to be from MailScanner has detected a possible fraud attempt from "secure-web.cisco.com" claiming to be https://www.mail-archive.com/freesurfer@nmr.mgh.harvard.edu/msg11344.html ) which is awfully slow. In case this is of use for anyone else, I attached a modified version using 'join' that runs much faster, only has some compatibility issues with Mac.

 

 

 

 

Thank you and best wishes

Cornelius

 

 

--

Cornelius Kronlage

Assistenzarzt
Klinik für Neurologie | Neurologie mit Schwerpunkt Epileptologie

Universitätsklinikum Tübingen

Hoppe-Seyler-Str. 3 | 72076 Tübingen