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An R Graph with Two Y-Axes

· Big Data Zone

The Big Data Zone is presented by Exaptive.  Learn how rapid data application development can address the data science shortage.

I’ve been asked how to do this sev­eral times, so I thought it might help to put an exam­ple online.

x <- 1:5
y1 <- rnorm(5)
y2 <- rnorm(5,20)
par(mar=c(5,4,4,5)+.1)
plot(x,y1,type="l",col="red")
par(new=TRUE)
plot(x, y2,,type="l",col="blue",xaxt="n",yaxt="n",xlab="",ylab="")
axis(4)
mtext("y2",side=4,line=3)
legend("topleft",col=c("red","blue"),lty=1,legend=c("y1","y2"))

 

The Big Data Zone is presented by Exaptive.  Learn about how to rapidly iterate data applications, while reusing existing code and leveraging open source technologies.

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