as_sf: Coerce a 'SpatVector' to a 'sf' object

In tidyterra: 'tidyverse' Methods and 'ggplot2' Helpers for 'terra' Objects

Coerce a SpatVector to a sf object

Description

as_sf() turns a SpatVector to sf object. This is a wrapper of sf::st_as_sf() with the particularity that the groups created with group_by.SpatVector() are preserved.

Usage

as_sf(x, ...)

Arguments

x	A SpatVector.
...	additional arguments passed on to sf::st_as_sf().

Value

A sf object object with an additional tbl_df class, for pretty printing method.

See Also

Coercing objects: as_coordinates(), as_spatraster(), as_spatvector(), as_tibble.Spat, fortify.Spat

Examples

library(terra)

f <- system.file("extdata/cyl.gpkg", package = "tidyterra")
v <- terra::vect(f)

# This is ungrouped
v
is_grouped_spatvector(v)

# Get an ungrouped data
a_sf <- as_sf(v)

dplyr::is_grouped_df(a_sf)

# Grouped

v$gr <- c("C", "A", "A", "B", "A", "B", "B")
v$gr2 <- rep(c("F", "G", "F"), 3)

gr_v <- group_by(v, gr, gr2)

gr_v
is_grouped_spatvector(gr_v)

group_data(gr_v)

# A sf

a_gr_sf <- as_sf(gr_v)

dplyr::is_grouped_df(a_gr_sf)

group_data(a_gr_sf)

tidyterra documentation built on April 15, 2025, 1:15 a.m.