Way to choose the format of hierarchical visualization

[jmmccota]

I want to talk about the organization of the hierarchical graph visualization. I am working on my master's degree in a strategy to show family trees about academic researchers.

Problem

My problem occur in larges trees, more than 20 children nodes, eg: , nodes' relationship lines overlap.

Even when I try horizontal format, the problem still occuring. I need a oriented graph(hierarchical layout).

Proposals

I want to know if there is a way to change the format, writing a draw function or some param to a function, eg: or even

Thanks a lot