[R] specify size of box around legend

[David L Carlson]

Also you can specify the upper left/lower right coordinates of the legend box:

# Get the default positions/sizes
plot(1, 1)
a <- legend(x="topleft", legend = x, title = "L 1")
b <- legend(x="bottomleft", legend = y, title = "L 2")

# Use those to change the box size
plot(1, 1)
legend(x=c(a$rect$left, a$rect$left+b$rect$w), y=c(a$rect$top, 
     a$rect$top-a$rect$h), legend = x, title = "L 1")
legend(x="bottomleft", legend = y, title = "L 2")

-------------------------------------
David L Carlson
Department of Anthropology
Texas A&M University
College Station, TX 77840-4352

-----Original Message-----
From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Jim Lemon
Sent: Saturday, March 12, 2016 9:34 PM
To: Rainer M Krug; r-help mailing list
Subject: Re: [R] specify size of box around legend

Hi Rainer,
You can use the text.width argument and override the calculated legend
text widths.

Jim


On Sat, Mar 12, 2016 at 1:01 AM, Rainer M Krug <Rainer at krugs.de> wrote:
> Hi
>
> assume the following code:
>
> --8<---------------cut here---------------start------------->8---
> plot(1,1)
> legend(x="topleft", legend = LETTERS[1:10], title = "L 1")
> legend(x="bottomleft", legend = paste(LETTERS[1:10], letters[1:12],LETTERS[1:10]), title = "L 2")
> legend(x="topright", legend = LETTERS[1:15], title = "L 3")
> --8<---------------cut here---------------end--------------->8---
>
> The box around L 1 is less wide than the box around L 2 due to automatic
> sizing of the box.
>
> Is there a way of specifying the width of the box, so that L 1 and L 2
> have the same width?
>
> In the same sense: can I also specify the height of the legend, so that
> L 1 and L 3 have the same height?
>
> Thanks,
>
> Rainer
> --
> Rainer M. Krug
> email: Rainer<at>krugs<dot>de
> PGP: 0x0F52F982
>
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