crop an sf object to a specific rectangle

crop an sf object to a specific rectangle

st_crop(x, y, ...)

# S3 method for sfc
st_crop(x, y, ..., xmin, ymin, xmax, ymax)

# S3 method for sf
st_crop(x, y, ...)

Arguments

x	object of class sf or sfc
y	numeric vector with named elements xmin, ymin, xmax and ymax, or object of class bbox, or object for which there is an st_bbox method to convert it to a bbox object
...	ignored
xmin	minimum x extent of cropping area
ymin	minimum y extent of cropping area
xmax	maximum x extent of cropping area
ymax	maximum y extent of cropping area

Details

setting arguments xmin, ymin, xmax and ymax implies that argument y gets ignored.

Examples

box = c(xmin = 0, ymin = 0, xmax = 1, ymax = 1)
pol = st_sfc(st_buffer(st_point(c(.5, .5)), .6))
pol_sf = st_sf(a=1, geom=pol)
plot(st_crop(pol, box))
plot(st_crop(pol_sf, st_bbox(box)))
#> Warning: attribute variables are assumed to be spatially constant throughout all geometries
# alternative:
plot(st_crop(pol, xmin = 0, ymin = 0, xmax = 1, ymax = 1))