wkt_unnest: Flatten nested geometry structures

In paleolimbot/wkutils: Utilities for Well-Known Geometry Vectors

Flatten nested geometry structures

Description

Flatten nested geometry structures

Usage

wkt_unnest(wkt, keep_empty = FALSE, keep_multi = TRUE, max_depth = 1)

wkb_unnest(wkb, keep_empty = FALSE, keep_multi = TRUE, max_depth = 1)

Arguments

wkt	A character vector containing well-known text.
keep_empty	If TRUE, a GEOMETRYCOLLECTION EMPTY is left as-is rather than collapsing to length 0.
keep_multi	If TRUE, MULTI* geometries are not expanded to sub-features.
max_depth	The maximum recursive GEOMETRYCOLLECTION depth to unnest.
wkb	A list() of raw() vectors, such as that returned by sf::st_as_binary().

Value

An unclassed vector with attribute lengths, which is an integer vector with the same length as the input denoting the length to which each feature was expanded.

Examples

wkt_unnest("GEOMETRYCOLLECTION (POINT (1 2), POINT (3 4))")
wkt_unnest("GEOMETRYCOLLECTION EMPTY")
wkt_unnest("GEOMETRYCOLLECTION EMPTY", keep_empty = TRUE)

paleolimbot/wkutils documentation built on Feb. 5, 2023, 10:42 a.m.