On Nov 1, 2011, at 5:05 AM, Martin Ivanov wrote:
Dear R users,
I want to plot not only triangles point up and triangles point down,
which is easy using the "pch" argument to "points". I want to plot
left and right pointing triangles as well. They must be fillable
with colour.
I browsed a little in the documentation, tried rotating the up and
down pointing triangles, but of no avail. Any suggestions will be
appreciated.
> plot(1:10)
> polygon(x=c(1.5,1.6,1.6), y=c(1.5,1.6,1.4))
> polygon(x=c(1.5,1.4,1.4)+1, y=c(1.5,1.6,1.4)+1)
> polygon(x=c(1.5,1.7,1.7)+1, y=c(1.5,1.7,1.3)+2, col="red")
Regards,
Martin Ivanov
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