Sinuosity of cell during life cycle

[stefanhahmann]

UserStory

From a biological perspective, the directness of movement of a cell during its life cycle may be a good descriptor for the cell type. Thus, it would be useful to have this information as a feature that may be computed from the cell lineage tree.

Acceptance criteria

1. Available as Feature within the Feature Computer
2. Computes the total number of leaves in a subtree of a branchspot

Tasks

• Implement Feature
• Implement FeatureComputer
• Write Unit test

Additional information

• $$ directness\ of\ movement = {distance\ along\ cell\ path\ \over euclidean\ distance\ between\ cell\ divisions} $$

• cf. also https://en.wikipedia.org/wiki/Sinuosity)