Test if a geometry is empty

g_is_empty() tests whether a geometry has no points.

Usage

g_is_empty(wkt)

Arguments

wkt

Character. OGC WKT string for a simple feature geometry.

Value

logical scalar. TRUE if the geometry has no points, otherwise FALSE.

Examples

g1 <- "POLYGON ((0 0, 10 10, 10 0, 0 0))"
g2 <- "POLYGON ((5 1, 9 5, 9 1, 5 1))"
g_difference(g2, g1) |> g_is_empty()
#> [1] TRUE