wkt_unnest: Flatten nested geometry structures
In wkutils: Utilities for Well-Known Geometry Vectors

wkt_unnest

R Documentation

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)

wkutils documentation built on Jan. 22, 2023, 1:50 a.m.