Plots speichern
bmp, jpeg, png, tiff, pdf, ps
jpeg
jpeg(file="path/filename",
width=x,
height=y,
units="px",
bg="white",
quality=100)
plot()
dev.off()
png
png(file="path/filename",
width=x,
height=y,
units="px",
bg="white",
quality=100)
plot()
dev.off()
pdf(file="",
width="", # der graphik
height="",
paper="a4",
title="") # "letter", etc.