This is using a Hilbert curves to transform a single dimension into a two-dimensional space, isn&#x27;t it?<p>(As demonstrated by: <a href="https:&#x2F;&#x2F;xkcd.com&#x2F;195&#x2F;" rel="nofollow">https:&#x2F;&#x2F;xkcd.com&#x2F;195&#x2F;</a>)<p>Hilbert curves preserve locality --- points that are close to each other on the curve are close to each other on the map. The human brain has lots of hardware acceleration for dealing with space and geography, so this is a really good way of visualising single-dimensional quantities in an intuitive way. I&#x27;ve always thought there were really cool things you could do with this technique.