terra (version 1.1-17)

select: Spatial selection

Description

Geometrically subset SpatRaster or SpatVector (to be done) by drawing on a plot (map).

Usage

# S4 method for SpatRaster
select(x, ...)
# S4 method for SpatVector
select(x, use="rec", draw=TRUE, col="cyan", ...)

Arguments

x

SpatRaster or SpatVector

use

character indicating what to draw. One of "rec" (rectangle) or "pol" (polygon)

draw

logial. If TRUE the selection is drawn on the map

col

color to be used for drawing if draw=TRUE

...

additional graphics arguments for drawing

Value

SpatRaster or SpatVector

See Also

crop and intersect to make an intersection and click and text to see cell values or geometry attributes

Examples

# NOT RUN {
# select a subset of a SpatRaster
r <- rast(nrow=10, ncol=10)
values(r) <- 1:ncell(r)
plot(r)
s <- select(r) # now click on the map twice

# plot the selection on a new canvas:
x11()
plot(s)

# vector
f <- system.file("ex/lux.shp", package="terra")
v <- vect(f)
plot(v)
x <- select(v) # now click on the map twice
x
# }