R情节传奇与透明背景

Qbi*_*bik 8 plot r legend alpha-transparency

使用plot()功能时如何用透明背景绘制图例?

Shi*_*Guo 23

使用:bg ="透明" in

legend()
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如:

legend("right",bg="transparent",col=c(as.numeric(unique(df$group2))),cex=0.5)
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