a5_cell: A5 Cell Index Vector

In a5R: 'A5' Discrete Global Grid System

A5 Cell Index Vector

Description

Create, test, and coerce A5 cell index vectors. Cells are stored as a record with eight raw-byte fields (b1–b8) representing the little-endian bytes of the u64 cell ID. This avoids the precision loss of floating-point storage and keeps memory compact.

Usage

a5_cell(x = character())

is_a5_cell(x)

as_a5_cell(x)

a5_is_valid(x)

Arguments

x	A character vector of hex-encoded A5 cell IDs, or an object coercible to one.

Value

An a5_cell vector (a5_cell, as_a5_cell), a logical scalar (is_a5_cell), or a logical vector (a5_is_valid).

Examples

cells <- a5_cell(c("0800000000000006", "0800000000000016"))
cells
a5_is_valid(c("0800000000000006", "not_a_cell", NA))

a5R documentation built on March 26, 2026, 5:10 p.m.