sfg_point {sfheaders}

sfg point

Description

constructs sfg POINT object

Usage

sfg_point(obj, x = NULL, y = NULL, z = NULL, m = NULL)

Arguments

obj

matrix or data.frame

x

x geometry column

y

y geometry column

z

z geometry column

m

m geometry column

Value

sfg object of POINT geometry

Examples

sfg_point( 1:2 )
sfg_point( 1:3 )
sfg_point( 1:4 )

sfg_point( matrix( 1:3, ncol = 3 ) )
sfg_point( data.frame( x = 1, y = 2, z = 3 )  )

sfg_point( data.frame( x = 1, y = 2, z = 3 ), x = "x", y = "y" )
sfg_point( data.frame( x = 1, y = 2, z = 3 ), x = 1, y = 3  )