mf_get_borders function

Get a border layer from polygons

This function extracts borders between contiguous polygons.

mf_get_borders(x)

Arguments

• x: an sf object of POLYGONS, using a projected CRS

Returns

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)