R語言繪圖如何把圖例繪制在外邊及調整圖例位置

1、

par(mai=c(2,2,2,2)) plot(1:10) legend(1,-1,"aaa",xpd=TRUE,box.lwd = 3, pch=15) legend(11,11,"bbb",xpd=TRUE,box.lwd = 3, pch=15)

 

 

2、

par(mai=c(2,2,2,2)) plot(1:10) legend("topleft",inset=c(0.01,0.2),"aaa",xpd=T,box.lwd = 3, pch=15)