[captncraig]

If you do that, you quickly run into the feasible depth limit for what you can show in a fixed space. Especially for sparse trees. Consider something like family trees, where you generally don't know anything about certain lines, but may have 20 generations or more on selected lines. No way could you show 2^20 nodes in a fixed format rendering, but you can make something kinda pretty by eliminating the empty space and organizing things to fill it intelligently.

[taywrobel]

I was just writing a radial RT-like visualization for displaying the branching structure of a binary tree and ran into the issue of information density you describe. Still pretty happy with the results, tho, in how it shows the structure and clustering.

And I colored it like a tree, just for fun - https://giphy.com/gifs/TKFUkrWQtil60Ij2YJ/html5