Time series plot or different time interval

Question

I would like to plot some point in r:

k<-c(540, 535, 545, 538, 530, 550, 544, 548)
m<-c(545, 536, 547, 540, 543)

for k I want to have points from time 1 to 8 on X-axis (difference between tim on x-axis between points are same)

plot(k, lwd=2,col="blue",xlab="Time",ylab="Values",pch=16,type="b")

but for m I would like to have this point on different time. For example on x-axis times (1,2,5,7,8) on the last plot with another color(red). How can I do that?

thanks alot

Answer 1

Could use par(new = TRUE) , something like

plot(k, lwd=2,col="blue",xlab="",ylab="",pch=16,type="b")
par(new = TRUE)
plot(c(1,2,5,7,8), m, col="red",xlab="Time",ylab="Values",pch=16,type="b", yaxt = 'n')

Could also just use lines instead

plot(k, lwd=2,col="blue",xlab="Time",ylab="Values",pch=16,type="b")
lines(c(1,2,5,7,8), m, col="red",pch=16, type="b")