[R] plot legend: combining filled boxes and lines

[Lauri Nikkinen]

Thanks Gabor, I got it!

For example:
x1 <- rnorm(100)
x2 <- rnorm(100, 2)
hist(x1, main = "", col = "orange",ylab = "density", xlab = "x", freq
= F, density = 55, xlim = c(-2, 5), ylim = c(0, 0.5))
par(new = T)
hist(x2, main = "", col = "green", ylab = "", xlab = "",axes = F, xlim
= c(-2, 5), ylim = c(0, 0.5), density = 45, freq = F)

abline(v = mean(x1), col = "orange", lty = 2, lwd = 2.5)
abline(v = mean(x2), col = "green", lty = 2, lwd = 2.5)
legend(3, 0.45, legend = c("x1", "x2", "mean(x1)", "mean(x2)"),
       col = rep(c("orange", "green"), 2), pch=c(15,15, NA, NA),
       pt.cex=2,
       lty = c(0, 0, 2, 2))

-Lauri



2007/9/10, Gabor Grothendieck <ggrothendieck at gmail.com>:
> Check out:
> http://tolstoy.newcastle.edu.au/R/e2/help/07/05/16777.html
>
> On 9/10/07, Lauri Nikkinen <lauri.nikkinen at iki.fi> wrote:
> > Hello,
> >
> > I have difficulties combining boxes and lines in plot legend. I
> > searched previous R-posts and found this (with no solution):
> > http://tolstoy.newcastle.edu.au/R/help/06/07/30248.html. Is there a
> > way to avoid boxes behind the line legends?
> >
> > x1 <- rnorm(100)
> > x2 <- rnorm(100, 2)
> > hist(x1, main = "", col = "orange",ylab = "density", xlab = "x", freq
> > = F, density = 55,  xlim = c(-2, 5), ylim = c(0, 0.5))
> > par(new = T)
> > hist(x2, main = "", col = "green", ylab = "", xlab = "",axes = F, xlim
> > = c(-2, 5), ylim = c(0, 0.5), density = 45, freq = F)
> >
> > abline(v = mean(x1), col = "orange", lty = 2, lwd = 2.5)
> > abline(v = mean(x2), col = "green", lty = 2, lwd = 2.5)
> > legend(3, 0.45, legend = c("x1", "x2", "mean(x1)", "mean(x2)"), col =
> > c("orange", "green"), fill=c("orange","green", 0, 0),  lty = c(0, 0,
> > 2, 2), merge = T)
> >
> > Thanks
> > Lauri
> >
> > ______________________________________________
> > R-help at stat.math.ethz.ch mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> >
>