Get largest (e.g. mainland) polygons from a map

R-bloggers · Oct 20, 2026

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I often need to get mainland from country / administrative region polygons, so I finally decided to write a function to help automate it. It selects the N largest feature(s) in a polygons or lines map. Here’s the code:

selectLargest <- function(x, # terra SpatVector polygons or lines n = 1, # number of largest…