It looks to be a bug. Here is the code and notice that ... is passed to
plot (which plots the first series) but not to lines (which plots the rest):
if (!add) {
ii <- ii[-1]
plot(x[, 1], y[, 1], type = type[1], xlab = xlab, ylab = ylab,
xlim = xlim, ylim = ylim, lty = lty[1], lwd = lwd[1],
pch = pch[1], col = col[1], cex = cex[1], bg = bg[1],
...)
}
for (i in ii) {
lines(x[, i], y[, i], type = type[i], lty = lty[i], lwd = lwd[i],
pch = pch[i], col = col[i], cex = cex[i], bg = bg[i])
}
This is from 2.8.1 patched but I noticed the same thing in
"R version 2.9.0 Under development (unstable) (2009-03-02 r48041)"
On Mon, Mar 23, 2009 at 6:25 PM, Christophe Genolini
<cgenolin at u-paris10.fr> wrote:> Hi the list,
>
> I am using matplot with the option lend="butt", but only the
first line (the
> black) is printed correctly ?:
>
>>
matplot(matrix(1:9,3),type="c",lwd=10,lty=1,lend="butt")
>
> Is it a bug ?
> I am using R2.8.1 under windows XP pack3.
>
> Christophe
>
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