Convert sf geometries to points compatible with Emlid Flow import.

Convert sf geometries to points compatible with Emlid Flow import.

Usage

as_ef_geom(x)

Arguments

x

An sf object.

Value

An sf object with type POINT or MULTIPOINT.

Details

A wrapper for sf::st_cast() that tries to convert the original geometry to a suitable (multi)point representation.

Examples

outer <- matrix(c(0, 0, 10, 0, 10, 10, 0, 10, 0, 0), ncol = 2, byrow = TRUE)
hole1 <- matrix(c(1, 1, 1, 2, 2, 2, 2, 1, 1, 1), ncol = 2, byrow = TRUE)
hole2 <- matrix(c(5, 5, 5, 6, 6, 6, 6, 5, 5, 5), ncol = 2, byrow = TRUE)
poly <- sf::st_polygon(list(outer, hole1, hole2))
as_ef_geom(poly)  # returns nodes of outer, omitting holes
#> MULTIPOINT ((0 0), (10 0), (10 10), (0 10))