Dear Ido,
the topology array is a 2-component cell array, meaning that for each line in
the network is associated with two scalar values.
Each scalar value is integer number identifying a bifurcation. For each line of
N points, the first scalar value is associated with
the bifurcation at the first point, the second with the bifurcation at the last
point of the line.
In ASCII art:
1 1 ------------ 3 3
------------ -1
-1 ------------- 0 0 -------------<
2 2 ------------ 4 4
------------ -1
Hope this helps
Luca
On Nov 14, 2011, at 2:14 PM, ido yerushalmy wrote:
> Hi all,
> I have extracted vessels network using VMTK via slicer (using the GUI:
> VMTKNetworkEtraction).
> I then saved the extracted network as a vtk file (see attached).
>
> I am trying to analyze the file in order to find loops in the network. I have
> started by looking at the 'LINES' section, searching for lines with 2
> identical points.
>
> I notice there's a 'Topology' section in the file, and I wonder if that
> information could also be used. However, I don't understand the format of
> that section.
> Any help or suggestions are appreciated.
>
> Thanks,
> Ido
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