[R] suppress some boxes drawn by legend(,fill)

[John Kane]

box.lty = 0  

assuming I understand the question.  
--- Tom Boonen <tom.boonen.maiden at gmail.com> wrote:

> Is there any way suppress box color and frame of a
> box drawn by
> legend(,fill)? I am able to suppress the color, but
> not the frame (see
> the example below). Many thanks! (This follows up
> from a question
> asked on the list in 2006 by Florian Koller)
> 
> Tom
> 
> 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)
> 
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