[R] Zoom In/Out maps library

[reichm@@j m@iii@g oii sbcgiob@i@@et]

R Help

Anyone know if I can add a zoom In/Out function to the maps available via the "maps" library? Or do I need to use a different mapping library?

world.map <- map_data("world")

ggplot(data = world.map) +
  geom_polygon(mapping = aes(x=long, y=lat, group=group))

Jeff