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64 lines
1.5 KiB
64 lines
1.5 KiB
% Generated by roxygen2: do not edit by hand
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% Please edit documentation in R/geom_encircle.r
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\name{geom_encircle}
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\alias{geom_encircle}
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\title{Automatically enclose points in a polygon}
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\usage{
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geom_encircle(mapping = NULL, data = NULL, stat = "identity",
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position = "identity", na.rm = FALSE, show.legend = NA,
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inherit.aes = TRUE, ...)
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}
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\arguments{
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\item{mapping}{mapping}
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\item{data}{data}
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\item{stat}{stat}
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\item{position}{position}
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\item{na.rm}{na.rm}
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\item{show.legend}{show.legend}
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\item{inherit.aes}{inherit.aes}
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\item{...}{dots}
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}
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\value{
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adds a circle around the specified points
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}
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\description{
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Automatically enclose points in a polygon
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}
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\examples{
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d <- data.frame(x=c(1,1,2),y=c(1,2,2)*100)
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gg <- ggplot(d,aes(x,y))
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gg <- gg + scale_x_continuous(expand=c(0.5,1))
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gg <- gg + scale_y_continuous(expand=c(0.5,1))
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gg + geom_encircle(s_shape=1, expand=0) + geom_point()
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gg + geom_encircle(s_shape=1, expand=0.1, colour="red") + geom_point()
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gg + geom_encircle(s_shape=0.5, expand=0.1, colour="purple") + geom_point()
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gg + geom_encircle(data=subset(d, x==1), colour="blue", spread=0.02) +
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geom_point()
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gg +geom_encircle(data=subset(d, x==2), colour="cyan", spread=0.04) +
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geom_point()
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gg <- ggplot(mpg, aes(displ, hwy))
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gg + geom_encircle(data=subset(mpg, hwy>40)) + geom_point()
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ss <- subset(mpg,hwy>31 & displ<2)
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gg + geom_encircle(data=ss, colour="blue", s_shape=0.9, expand=0.07) +
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geom_point() + geom_point(data=ss, colour="blue")
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}
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\author{
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Ben Bolker
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}
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