Centroids — centroids • terra

Get the centroids of polygons or lines, or centroid-like points that are guaranteed to be inside the polygons or on the lines.

Or get the (weighted) centroid of the the cells with values (not NA) of a SpatRaster.

Usage

# S4 method for class 'SpatVector'
centroids(x, inside=FALSE)

# S4 method for class 'SpatRaster'
centroids(x, weighted=FALSE)

Arguments

x: SpatVector
inside: logical. If TRUE the points returned are guaranteed to be inside the polygons or on the lines, but they are not the true centroids. True centroids may be outside a polygon, for example when a polygon is "bean shaped", and they are unlikely to be on their line
weighted: logical. If TRUE the centroids are computed as the weighted means of the coordinates of cells with values

Value

SpatVector of points

Examples

f <- system.file("ex/lux.shp", package="terra")
v <- vect(f)
x <- centroids(v)
y <- centroids(v, TRUE)


f <- system.file("ex/elev.tif", package="terra")
r <- rast(f)
centroids(r)
#>          x        y
#> 1 6.091757 49.77608