dist_to_nearest: Calculate raster of distances to nearest feature

In starsExtra: Miscellaneous Functions for Working with 'stars' Rasters

Description

Given a stars raster and an sf vector layer, returns a new raster with the distances of each cell centroid to the nearest feature in the vector layer.

Usage

dist_to_nearest(x, v, progress = TRUE)

Arguments

x	A stars layer, used as a "grid" for distance calculations
v	An sf, sfc or sfg object
progress	Display progress bar? The default is TRUE

Value

A stars raster with distances to nearest feature

Examples

# Sample 'sf' layer
x = st_point(c(0,0))
y = st_point(c(1,1))
x = st_sfc(x, y)
x = st_sf(x)
x = st_buffer(x, 0.5)

# Make grid
r = make_grid(x, res = 0.1, buffer = 0.5)
d = dist_to_nearest(r, x, progress = FALSE)

# Plot
plot(d, breaks = "equal", axes = TRUE, reset = FALSE)
plot(st_geometry(x), add = TRUE, pch = 4, cex = 3)

starsExtra documentation built on Nov. 18, 2021, 5:08 p.m.