The following three lines will do what you want. You will probably want to change some of the default behaviour; just look at the relevant help pages.
plot(x,y) text(x,y,ID) grid(2) On 21/01/07, gnv shqp <[EMAIL PROTECTED]> wrote: > Hi my friends, > > I'm trying to make a scatterplot like this. > > 1) I have a 3-variable dataset. They are ID, x, and y. > > 2) "x" is for the X-axis, "y" for the Y-axis, and "ID" is used to label all > the cases in the scatterplot. > > 3) After creating the scatterplot, I need to add both a X-axis reference > line and a Y-axis reference line. The X-axis reference line is a vertical > line starting from the center of the X-axis. The Y-axis reference line is a > horizontal line starting from the center of the Y-axis. In other words, by > creating the two reference lines, the scatterplot is divided into 4 > quadrants. > > Please help me figure out how to do that in R. > > Many thanks in advance! > > Feng > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- ================================= David Barron Said Business School University of Oxford Park End Street Oxford OX1 1HP ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.