使用plotrix作韋恩圖

color <- c("#E41A1C","#377EB8","#FDB462")
color_transparent <- adjustcolor(color, alpha.f = 0.2)
color_transparent1 <- adjustcolor(color, alpha.f = 1)
########################################
p_x <- c(0,13,-13, 10.4,-10.4,0, 0)
p_y <- c(13,-9,-9, 4,4,-13.5, -1)
p_lab <- c(251,299,305,272,200,262,17814)
title_x <- c(0,17,-17)
title_y <- c(19.8,-18,-17)
title_lab <- c("CM1\n(18537)","CM2\n(18647)","CM3\n(18581)")
########################################
par(mar=c(7,10,7,8)+0.1,xpd=TRUE)
plot(c(-18,18), c(-18,18), type="n",,xaxt = "n", xlab="",ylab="",yaxt = "n", axes=F,main="")
draw.ellipse(c(0,4,-4), c(3.02,-3.912,-3.912), c(14,14,14), c(14,14,14),border=color_transparent1,
angle=c(60,120,0), lty=1,col = color_transparent,lwd = 2)
text (p_x,p_y,p_lab,cex=1,col="grey20")
text (title_x,title_y,title_lab,cex=1.2,col=color_transparent1)

• 圖片效果以下