extract.vertices: Extract vertices for polygons or lines
In spatialEco: Spatial Analysis and Modelling Utilities

extract.vertices

R Documentation

Extract vertices for polygons or lines

Description

Extracts [x,y] vertices from an sf line or polygon object

Usage

extract.vertices(x, join = TRUE)

Arguments

`x`	An sf line or polygon class object
`join`	(TRUE/FALSE) Joint attributes from original object

Details

This function returns the vertices of a line or polygon object, as opposed to the polygon centroids or line start/stop coordinates

Value

An sf POINT object of extrated line or polygon vertices

Author(s)

Jeffrey S. Evans <jeffrey_evans@tnc.org>

Examples


library(sf)
nc <- sf::st_read(system.file("shape/nc.shp", package="sf"))
  nc <- suppressWarnings(sf::st_cast(nc, "POLYGON"))
    nc <- nc[c(10,50),]
  
( v <- extract.vertices(nc) )
  plot(st_geometry(nc))
    plot(st_geometry(v), pch=20, cex=2, col="red", add=TRUE)

spatialEco documentation built on Nov. 18, 2023, 1:13 a.m.