"summary"(object, ...)"coastline", usually, a result of a
call to read.coastline or read.oce.coastline data: [[,coastline-method,
[[<-,coastline-method,
as.coastline,
coastline-class,
coastlineBest, coastlineCut,
coastlineWorld,
download.coastline,
plot,coastline-method,
read.coastline.openstreetmap,
read.coastline.shapefile,
subset,coastline-method