fabiovalse
This experiment concludes the Hilbert Map series (1, 2, 3, 4). The level of detail has been added in order to show quad tiles only when a certain zoom level has been reached.
Modified http://d3js.org/d3.v3.min.js to a secure url
Modified http://jsclipper.sourceforge.net/6.1.3.1/clipper.js to a secure url
https://d3js.org/d3.v3.min.js
https://jsclipper.sourceforge.net/6.1.3.1/clipper.js