Further Towards Unambiguous Edge Bundling: Investigating Power-Confluent Drawings for Network Visualization
IEEE Transactions on Visualization and Computer Graphics (2021)
Abstract. Bach et al.  recently presented an algorithm for constructing confluent drawings, by leveraging power graph decomposition to generate an auxiliary routing graph. We identify two problems with their method and offer a single solution to solve both. We also classify the exact type of confluent drawings that the algorithm can produce as 'power-confluent', and prove that it is a subclass of the previously studied 'strict confluent' drawing. A description and source code of our implementation is also provided, which additionally includes an improved method for power graph construction.