Overview

The reference implementation of A5 is written in Typescript, with the following functions available.

For examples on how to use the code, see the example code on Github

Indexing

• lonLatToCell
• cellToLonLat
• cellToBoundary
• u64ToHex
• hexToU64

Hierarchy

• getResolution
• cellToParent
• cellToChildren

Traversal

• gridDisk
• gridDiskVertex
• sphericalCap
• lineStringToCells

Regions

• polygonToCells

Compaction

• compact
• uncompact