[R] plotting multiple lines on single graph ggplot2

Hello everyone I have some data of the following type. 100 200 300 400 500 1.1 1.2 1.3 1.4 1.5 600 700 800 900 1000 1.5 1.7 1.9 2.0 2.4 With plot() and points functions I can plot these 4 lines of data. But I dont know how to do it with qplot or ggplot functions. The scenario is something like t

Re: [R] plotting multiple lines on single graph ggplot2

Its very much simple. Simply, if we do like the following x<-c(100,200,300,400,500) y<-c(1.1, 1.2, 1.3, 1.4, 1.5) a<-c(600, 700, 800, 900, 1000) b<-(1.5, 1.7, 1.9, 2.1, 2.3) plot(x,y) points(a,b) As you can see the call to points() function will superimpose a new curve (with some new points on x-