sfheaders (version 0.4.4)

sfg_linestring: sfg linestring

Description

constructs sfg LINESTRING object

Usage

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

Value

sfg object of LINESTRING geometry

Arguments

obj

matrix or data.frame

x

x geometry column

y

y geometry column

z

z geometry column

m

m geometry column

Examples

sfg_linestring( 1:2 )
sfg_linestring( 1:3 )
sfg_linestring( 1:4 )

sfg_linestring( matrix( 1:24, ncol = 2 ) )
sfg_linestring( matrix( 1:24, ncol = 3 ) )
sfg_linestring( matrix( 1:24, ncol = 4 ) )

sfg_linestring( matrix( 1:24, ncol = 4 ), x = 3, y = 2, z = 3)

sfg_linestring( data.frame( x = 1:10, y = 11:20 ) )
sfg_linestring( data.frame( x = 1:10, y = 11:20, z = 21:30 ) )
sfg_linestring( data.frame( x = 1:10, y = 11:20, z = 21:30 ), x = "x", y = "z" )