coastlineWorld, coastlineWorldFine and
coastlineWorldCoarse, in that order, to find the one most appropriate
for the locale.
coastlineBest(lonRange, latRange, span, debug = getOption("oceDebug"))data().
coastline data: [[,coastline-method,
[[<-,coastline-method,
as.coastline,
coastline-class,
coastlineCut, coastlineWorld,
download.coastline,
plot,coastline-method,
read.coastline.openstreetmap,
read.coastline.shapefile,
subset,coastline-method,
summary,coastline-method