steve wrote:
> In the following snippet
>
> plot(1:10,1:10,type="n")
> points(1:5,1:5,pch="+")
> points(6:10,6:10,pch=20)
> legend(5,5, c("A","B"), pch=c("+",20))
>
> I want to get a legend with a "+" and a solid circle (pch=20).
> However, what I get in the legend is "+" and "2". How can I get a "+"
> and a solid circle?
>
>
Hmm... There seems to be no way around having all pch's of the same
type, because it has to be a single vector. So what you need to do is to
find the integer code for "+". This happens to be the same as its ASCII
code which is 43. One slightly sneaky way of finding that out is
> as.integer(charToRaw("+"))
[1] 43
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