butterfly.R

## Makes nice butterfly figure
## library(checkpoint)
## checkpoint("2019-06-07", R.version = "3.6.0")

library(ggplot2)
npoints=500
npointsb=1200
opt=theme(legend.position="none",
          panel.background = element_blank(),
          panel.grid = element_blank(),
          axis.ticks=element_blank(),
          axis.title=element_blank(),
          axis.text =element_blank())
t=seq(0,10*pi,length=npointsb)
butterfly=data.frame(x=sin(t)*(exp(1)^cos(t)-2*cos(4*t)-(sin(t/12))^5), y=cos(t)*(exp(1)^cos(t)-2*cos(4*t)-(sin(t/12))^5), s=runif(npointsb, min=.1, max=10), f=factor(sample(1:10,npointsb,TRUE)), a=runif(npointsb,min=.1, max=.4))
points=data.frame(x=runif(npoints,-4,4), y=runif(npoints,-3,5), s=runif(npoints,min=30, max=50), f=factor(sample(1:10,npoints,TRUE)), a=runif(npoints,min=.05, max=.15))
data=rbind(butterfly, points)
ggplot(data, aes(x, y, colour=f))+geom_point(alpha=data$a,size=data$s)+opt