Convert wkpool segments to WKT

Usage

segments_to_wkt(x, type = c("multilinestring", "linestring", "point"))

segments_to_wkb(x, type = c("multilinestring", "linestring", "point"), ...)

Arguments

x: A wkpool
type: Output type: "linestring" (segments as paths), "multilinestring" (all segments), or "point" (vertices only)
...: Passed to wk::as_wkb()

Value

A wk_wkt vector

Details

Geometry is assembled natively via wk::wk_linestring() and wk::wk_collection() (WKB first, WKT derived from it): coordinates are emitted at full double precision, z is carried when the pool has it, and the pool's crs and geodesic flag are attached to the output.

Examples

x <- wk::as_wkb(c(
  "POLYGON ((0 0, 1 0, 1 1, 0 1, 0 0))",
  "POLYGON ((1 0, 2 0, 2 1, 1 1, 1 0))"
))
pool <- establish_topology(x)
segments_to_wkt(pool)
#> <wk_wkt[1]>
#> [1] MULTILINESTRING ((0 0, 1 0), (1 0, 1 1), (1 1, 0 1...
segments_to_wkt(pool, type = "linestring")
#> <wk_wkt[8]>
#> [1] LINESTRING (0 0, 1 0) LINESTRING (1 0, 1 1) LINESTRING (1 1, 0 1)
#> [4] LINESTRING (0 1, 0 0) LINESTRING (1 0, 2 0) LINESTRING (2 0, 2 1)
#> [7] LINESTRING (2 1, 1 1) LINESTRING (1 1, 1 0)