[R] specify size of box around legend

[Duncan Murdoch]

On 11/03/2016 9:01 AM, Rainer M Krug 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?

text.width should work.  (It is in the ?legend help page, along with 
approximately one million other optional arguments.)
>
> In the same sense: can I also specify the height of the legend, so that
> L 1 and L 3 have the same height?

You can add blank entries as fillers to L 1.

Duncan Murdoch