[R] line width in legend of interaction.plot

[ilai]

On Wed, Feb 22, 2012 at 11:37 AM, Matthias Gondan
<matthias-gondan at gmx.de> wrote:
> Dear R developers,
>
> The following command produces an interaction plot with lwd=2.
>
> interaction.plot(c(1, 2, 1, 2), c(1, 1, 2, 2), 1:4, lwd=2)
>
> In the legend, however, lwd seems to be 1, which does not seem
> to be intended behavior.

Why not? Your suggestion will cause something like this to be the default

 interaction.plot(c(1, 2, 1, 2), c(1, 1, 2, 2), 1:4, lwd=4,legend=F)
 legend('topleft',c('1','2'),lty=1:2,lwd=4)

Which seems worse to me.

Cheers



Probably the lwd is not correctly forwarded
> to legend:
>
> from the interaction.plot source:
>
>        legend(xleg, yleg, legend = ylabs, col = col, pch = if (type %in%
>            c("p", "b"))
>            pch, lty = if (type %in% c("l", "b"))
>            lty, bty = leg.bty, bg = leg.bg) <- here I would add lwd=<well,
> the lwd from the ... argument, or perhaps something like leg.lwd>
>
> Best wishes,
>
> Matthias Gondan
>
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