Line plots in base graphics

Am I missing something obvious on how to draw multi-line plots in base graphics?

In ggplot2, I can do:
It appears you've been infected with what I like to call "the Dijkstra
syndrome" [*], quoting

"The tools we use have a profound (and devious!) influence on our
thinking habits, and, therefore, on our thinking abilities."

You can probably blame ggplot2 here, messing with our minds and
spoiling us. I can't seem able to think like spreadsheets anymore
either, because of R.

Thanks though,

baptiste

[*] http://www.cs.virginia.edu/~evans/cs655/readings/ewd498.html
data(Oxboys, package = "nlme")
library(ggplot2)

qplot(age, height, data = Oxboys, geom = "line", group = Subject)

But in base graphics, the best I can come up with is this:

with(Oxboys, plot(age, height, type = "n"))
lapply(split(Oxboys[c("age", "height")], Oxboys$Subject), lines)

Am I missing something obvious?

Thanks!

Hadley

--
Assistant Professor / Dobelman Family Junior Chair
Department of Statistics / Rice University
http://had.co.nz/

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Line plots in base graphics

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