retrieve bbox from spatial data

Description

retrieves spatial bounding box from spatial data

Usage

        bbox(obj)

Arguments

Value

two-column matrix; the first column has the minimum, the second the maximum values; rows represent the spatial dimensions

Methods

obj = "Spatial"

object deriving from class "Spatial"

obj = "ANY"

an array with at least two columns

obj = "Line"

object deriving from class "Line"

obj = "Lines"

object deriving from class "Lines"

obj = "Polygon"

object deriving from class "Polygon"

obj = "Polygons"

object deriving from class "Polygons"

Examples

# just 9 points on a grid:
x <- c(1,1,1,2,2,2,3,3,3)
y <- c(1,2,3,1,2,3,1,2,3)
xy <- cbind(x,y)
S <- SpatialPoints(xy)
bbox(S)

# data.frame
data(meuse.grid)
coordinates(meuse.grid) <- ~x+y
gridded(meuse.grid) <- TRUE
bbox(meuse.grid)