r - 在 R 中绘制图外的图例

我正在尝试使用 xpd=TRUE 将图例放在图外，但图例一直在图内绘制。我怎样才能解决这个问题？

x = c(0,0,1,1,1)
y = c(0.4991,1.1423,1.2258,1.158,0.5148)
dat<-cbind(x,y)
point_shape = c(10,15,10,15,1)
dat<-data.frame(x,y,point_shape)

myTicks<-c(0,1)
plot(dat[,1],dat[,2], yaxt="n", xaxt="n", xlab="", ylab="",pch = dat$point_shape)
abline(0.4991,0.7267)
abline(1.1423,0.0157)
abline(0.4991,0.0157,lty=2)
axis(side = 1, at = myTicks)
axis(side = 2, at = myTicks)


legend("bottomleft", legend = c("apple", "orange", "tree"),
       bty = "n", xpd=FALSE, mar(c(7,7,7,7)), cex = 1, pch = c(10, 15, 1))

最佳答案

请参阅 legend 的帮助:



因此，您可以通过手动提供其坐标将图例放置在绘图区域之外:

legend(-0.2, 0.3, legend = c("apple", "orange", "tree"),
       bty = "n", xpd=TRUE, mar=c(7,7,7,7), cex = 1, pch = c(10, 15, 1))

关于r - 在 R 中绘制图外的图例，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/50737256/