quadtree (version 0.1.14)

extent: Get the extent of a Quadtree

Description

Gets the extent of the Quadtree as an Extent object (from the raster package).

Usage

# S4 method for Quadtree
extent(x, original = FALSE)

Value

an Extent object

Arguments

x

a Quadtree

original

boolean; if FALSE (the default), it returns the total extent covered by the quadtree. If TRUE, the function returns the extent of the original raster used to create the quadtree, before the dimensions were adjusted by padding with NAs and/or the raster was resampled.

Examples

library(quadtree)
habitat <- terra::rast(system.file("extdata", "habitat.tif", package="quadtree"))

# create a quadtree
qt <- quadtree(habitat, split_threshold = .1, adj_type = "expand")

# retrieve the extent and the original extent
ext <- extent(qt)
ext_orig <- extent(qt, original = TRUE)

ext
ext_orig

# plot them
plot(qt)
rect(ext[1], ext[3], ext[2], ext[4], border = "blue", lwd = 4)
rect(ext_orig[1], ext_orig[3], ext_orig[2], ext_orig[4],
     border = "red", lwd = 4)