sfheaders (version 0.4.4)

sfc_multipoint: sfc MULTIPOINT

Description

constructs sfc of MULTIPOINT objects

Usage

sfc_multipoint(
  obj,
  x = NULL,
  y = NULL,
  z = NULL,
  m = NULL,
  multipoint_id = NULL
)

Value

sfc object of MULTIPOINT geometries

Arguments

obj

sorted matrix or data.frame

x

x geometry column

y

y geometry column

z

z geometry column

m

m geometry column

multipoint_id

column of ids for multipoints

notes

sfheaders functions do not perform any validity checks on the geometries. Nor do they set Coordinate Reference Systems, EPSG, PROJ4 or precision attributes.

The data.frame and matrices you send into the sfheader functions must be ordered.

Examples

x <- matrix( c(1:4), ncol = 2 )
sfc_multipoint( x )

x <- data.frame( id = 1:2, x = 1:2, y = 2:1 )
sfc_multipoint( x )
sfc_multipoint( x, x = "x", y = "y" )
sfc_multipoint( x, x = "y", y = "x" )
sfc_multipoint( x, multipoint_id = "id", x = "x", y = "y")