Message-ID: <971536df0903232124u3e304ce0gb648217052cee8c@mail.gmail.com>
Date: 2009-03-24T04:24:05Z
From: Gabor Grothendieck
Subject: Legend containing maths symbol and values of variables
In-Reply-To: <42d0a5730903232053t22fb38e6vbb71a3e5359764b2@mail.gmail.com>
For the legend argument try this:
leg = as.expression(c(sprintf("Up (>= %d)", threshold),
"Normal", "Down", "NA"))
or use paste in place of sprintf.
On Mon, Mar 23, 2009 at 11:53 PM, Daren Tan <darentan76 at gmail.com> wrote:
> I need to have the maths symbol for >= in the legend, and to
> substitute threshold variable with its value. Somehow, various
> attempts weren't successful. Please help.
>
> threshold <- 0.5
>
> plot(NA, xlab="", ylab="", main="", axes=F, xlim=c(0,1), ylim=c(0,1),
> xaxs="i", yaxs="i")
> legend(x=0, y=1, fill=c("orange", "white", "green", "gray90"),
> cex=0.8, pt.cex=1.8, x.intersp=0.6, bg = "white",
> ? ? ? ? ? legend=c(expression("Up (" >= threshold ")"), "Normal",
> "Down", "NA"), bty = "n")
>
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