as.lines {terra}

Conversion to a SpatVector of lines

Description

Conversion of a SpatRaster, SpatVector or SpatExtent to a SpatVector of lines.

Usage

## S4 method for signature 'SpatRaster'
as.lines(x)

## S4 method for signature 'SpatVector'
as.lines(x)

## S4 method for signature 'SpatExtent'
as.lines(x, crs="")

Arguments

x

SpatRaster, SpatVector or SpatExtent

crs

character. The coordinate reference system (see crs)

Value

SpatVector

See Also

as.points, as.polygons

Examples

r <- rast(ncols=2, nrows=2)
values(r) <- 1:ncell(r)

as.lines(r)

as.lines(ext(r), crs=crs(r))

if  (gdal() >= "3.0.0") {
	p <- as.polygons(r)
	as.lines(p)
}