One hexagonal bin: where its centre is, and how many points fell in it.
The centre is carried per bin rather than derived from a lattice origin and
a cell size, because a hex lattice staggers alternate rows by half a cell --
so a bin's index does not give its position, and a consumer reconstructing
one would have to know which rows a particular library chose to offset.
One hexagonal bin: where its centre is, and how many points fell in it.
The centre is carried per bin rather than derived from a lattice origin and a cell size, because a hex lattice staggers alternate rows by half a cell -- so a bin's index does not give its position, and a consumer reconstructing one would have to know which rows a particular library chose to offset.