Aperture 3

[kaspermarstal]

Very exciting tool! One question, why is it called h3 if you use aperture 7? Did you originally use aperture 3? Or do you have aperture 3 support in the pipeline? Just curious.

[dfellis]

It's a reference to the S2 library we were inspired by. S2 is "S"quares with XY coordinates on each face ("2" dimensions), H3 is "H"exagons with IJK coordinates on each face ("3" dimensions).

The aperture 7 choice was so we would have an unambiguous tree of parent-child assignments, also like S2, and is pretty fundamental to how H3 can be used, so I don't expect other apertures to be implemented (though technically we use aperture 4 to get the coordinates of the outline of any particular hexagon, but those hexagons are not exposed or given an identifier).

[kaspermarstal]

OK, thank you for the information and for open sourcing such a high-quality library.