> x<-runif(50,0,2)
> y<-runif(50,0,2)
> plot(x,y,main="散点图",xlab="横坐标",ylab="纵坐标")
> text(0.6,0.6,"text at (0.6,0.6)")
> abline(h=.6,v=.6)
>
> x<-runif(50,0,2)
> y<-runif(50,0,2)
> plot(x,y,main="散点图",xlab="横坐标",ylab="纵坐标")
> text(0.6,0.6,"text at (0.6,0.6)")
> abline(h=.6,v=.6)
>
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