After all the comments on treemaps and sunburst layouts, I think many readers might enjoy the following article if they haven't seen it already: A "Tour through

After all the comments on treemaps and sunburst layouts, I think many readers might enjoy the following article if they haven't seen it already: A "Tour through the Visualization Zoo", by Jeffrey Heer, Michael Bostock, and Vadim Ogievetsky.[1] See the section on Hierarchies. In that article, the icicle graph (same as the flame graph) has long rectangles suitable for labeling -- although their example has the font rotated 90 degrees and not making the best use of that space. But as you can see, these are all related. Hierarchy visualizations. If I were serious about building a tool to do disk space visualizations, I'd let the user toggle between all three visualizations. I should also note that I think both treemaps and sunburst layout have their own cons, which I've mentioned here on HN. [1] http://queue.acm.org/detail.cfm?id=1805128 http://queue.acm.org/detail.cfm?id=1805128