Index a point | Cell boundaries | Hierarchy and compaction | Compact and uncompact | Traversal | Converting geometries to a5 cells | Tracing a line

The problem | The solution: eight raw-byte fields | R-side: a vctrs record type | Why this matters | NA handling | Summary

Setting the thread count | What gets parallelised | When is it worthwhile? | Thread safety

Selecting cells around a point | Distance heatmap | Distance methods

The uint64 problem | The solution: a5_cell_from_arrow() and a5_cell_to_arrow() | Writing and reading Parquet | How it works under the hood