[R] symbols: zero radius circles are drawn.
Stephen Eglen
eglen at pcg.wustl.edu
Tue Jun 4 00:26:28 CEST 2002
Hi,
I don't think this is a bug, but I thought I'd mention it in case
others think it is not correct... I guess it is probably just a
rounding error.
If I use symbols() to draw some circles, any circle with radius of
zero gets drawn as a small circle. As an example:
postscript(file="test.ps")
symbols(1:9, rep(2,9),
circles=seq(from=0.05, to=0.0, length=9),
inches=FALSE, xlim=c(0, 10), ylim=c(1,3))
dev.off()
The rightmost circle should be of radius 0, but looking at the plot it is
drawn bigger than both the previous two circles.
The workaround I used was to change any radius of 0 to NA so that no
circle is then drawn.
Stephen
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