Question

I just started using R and like to know how to plot a line .
With one of my tool I am doing regression which generating csv files. FOrmat is as follows:

X ,Y, Y1,Y2 

From this csv file I like to draw three lines as (x,y) , (x,y1) and (x,y2). How do I do it from csv file?
Sorry its basic question but appreciates if anyone help me.

Answer 1

yourData <- read.csv("yourCSV.csv")
with(yourData, plot(X, Y, type = "l"))
with(yourData, lines(X, Y1))
with(yourData, lines(X, Y2))

Also see ?abline.