Testing coverage tool: component map with calculations

I am looking for a software that can provide creating maps with nodes (representing components of the system), but also provide calculations between nodes.

Reason for this is that I am making a map of components of my system and I want to assign coverage to each one of them. E.g. when I change coverage on one of them, coverage on the rest of the components are updated automatically.

Example: AverageScoreCalculation

Thank you.