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get_children

get child H3 cell indices


Description

This function returns the children of a particular H3 cell at the requested resolution.

Usage

get_children(h3_address = NULL, res = NULL, simple = TRUE)

Arguments

h3_address

Character; 15-character index generated by H3.

res

Integer; Desired H3 resolution. See https://h3geo.org/docs/core-library/restable/ for allowable values and related dimensions.

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 vector of H3 cell indexes.

Note

The number of cells returned for each request is '7 ^ (parent_res - child_res)', so jumping three levels will return 343 indexes per request. This can cause memory issues with larger requests.

Examples

# What are the children of this resolution 6 cell index at resolution 8?
get_children(h3_address = '86be8d12fffffff', res = 8)

h3jsr

Access Uber's H3 Library

v1.2.2
Apache License (>= 2)
Authors
Lauren O'Brien [aut, cre] (<https://orcid.org/0000-0002-7336-2171>)
Initial release
2021-06-16

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