I've blogged about this before, but came across another video that better captures the excitement of touch-based navigation of a taxonomy. Perceptive Pixel's (recently acquired by Microsoft) Jeff Han demos browsing an animal classification. The underlying visualisation is fairly sttaightforward, but the speed and ease with which you can interact with it clearly makes it fun to use.
DeepTree comes from Life on Earth lab, and there's a paper coming out by @blockflorian and colleagues (I was reminded of this project by @treevisproject):
Technique added: DeepTree (2012); Florian Block, Michael Horn, Brenda Phillips, Judy Diamond, Margaret Evans, Chia Shen researchgate.net/publication/23…— treevis.net Project (@treevisproject) September 21, 2012
For technical details on the layout algorithm see https://lifeonearth.seas.harvard.edu/downloads/DeepTree.pdf. Below is a video of it in use:
Both of these are really nice, but what I really want is to have this on my iPad…