Plots a Polygonal Domain (of Various Classes)
plot_polyregion(polyregion, lwd = 2, add = FALSE)
polyregion: a polygonal domain. The following classes are supported: "owin" from package spatstat.geom, "gpc.poly" from gpclib, "SpatialPolygons", "Polygons", and "Polygon" from package sp, as well as "(MULTI)POLYGON" from package sf. (For these classes, polyCub knows how to get an xylist.)lwd: line width of the polygon edges.add: logical. Add to existing plot?