mf_get_borders: Get a border layer from polygons

In mapsf: Thematic Cartography

Get a border layer from polygons

Description

This function extracts borders between contiguous polygons.

Usage

mf_get_borders(x)

Arguments

x	an sf object of POLYGONS, using a projected CRS

Value

An sf object (MULTILINESTRING) of borders is returned.

Note

If the polygon layer contains topology errors (such as contiguous polygons not sharing exactly the same boundary) the function may not return all boundaries correctly. It is possible to use st_snap() or other functions to try and correct these errors.

Examples

mtq <- mf_get_mtq()
mtq_b <- mf_get_borders(mtq)
mf_map(mtq)
mf_map(mtq_b, col = 1:5, lwd = 4, add = TRUE)

mapsf documentation built on Oct. 22, 2024, 5:07 p.m.