Right - these are the frequency dot plots I first saw in Greg Conti's work (some examples here: http://sebug.net/paper/Meeting-Documents/BlackHat-USA2008/BH_US_

Right - these are the frequency dot plots I first saw in Greg Conti's work (some examples here: http://sebug.net/paper/Meeting-Documents/BlackHat-USA2008/BH_US_08_Conti_Dean_Visual_Forensic_Analysis.pdf http://sebug.net/paper/Meeting-Documents/BlackHat-USA2008/BH...). They're definitely on the way. Regarding other space-filling curves - I'm in two minds about this. I've implemented z-order and the H-curve for binvis, but for different reasons neither of these are as useful as the Hilbert curve, so they're not exposed in the interface. My feeling now is that I should pick one locality preserving layout and one intuitive layout to keep things simple and usable. I want binvis to be a workaday tool, so I'm keeping my space-filling curve geekery to another project (https://github.com/cortesi/scurve https://github.com/cortesi/scurve).