Module: Split and Merge Segments ()

Description:

This is an experimental module from the Xtra Library: https://xtras.amira-avizo.com.

This module merges at each branching point the 2 segments with the highest evaluation score and detaches the others segments from this branching point.
A new node is therefore created for each detached segment as the one new end of this segment.
The evaluation score is computed from one of the point attributes available.
Once a point attribute has been selected for the evaluation, the evaluation scoring and ranking methods can be defined.

Connections:

Data [required]
The graph to be processed. Supported type is: Spatial Graph.

Ports:

Point Attribute

This port specifies the point attribute to use for the computation of the evaluation score.
The point attribute selected must be valid: it must be numerical.

Merge Tactic

This port specifies the scoring and ranking methods.
First the ranking operator must be selected:

• Biggest: the scores are ranked by ascending order (1st has the highest score).
• Smallest: the scores are ranked by descending order (1st has the lowest score).

Then the scoring operator must be selected:

• Mean: the evaluation score is the mean of all the points attribute values over the segment.
• Median: the evaluation score is the median of all the points attribute values over the segment.
• Minimum: the evaluation score is the minimum of all the points attribute values over the segment.
• Maximum: the evaluation score is the maximum of all the points attribute values over the segment.
• Mass: the evaluation score is the total of all the points attribute values over the segment.