get_disk: Get nearby H3 cell indices

In h3jsr: Access Uber's H3 Library

Get nearby H3 cell indices

Description

This function returns all the H3 cell indices within a specified number of steps from the index supplied.

Usage

get_disk(h3_address = NULL, ring_size = 1, simple = TRUE)

Arguments

h3_address	Character; 15-character cell index generated by H3.
ring_size	Character; number of steps away from the central cell. Defaults to 1.
simple	Logical; whether to return a vector of outputs or a data frame containing both inputs and outputs.

Value

By default, a list of length(h3_address). Each list element contains a character vector of H3 cells.

Note

The number of cells returned for each input index conforms to the centered hexagonal number sequence, so at ring_size = 5, 91 addresses are returned. The first address returned is the input address, the rest follow in a spiral anticlockwise order.

Examples

# What are all the neighbours of this cell within two steps?
get_disk(h3_address = '86be8d12fffffff', ring_size = 2)

h3jsr documentation built on Jan. 22, 2023, 1:31 a.m.