--- Robin Hankin <[EMAIL PROTECTED]> wrote: > Hi > > I have two datasets, A and B, consisting of two > columns of numbers > representing x and y coordinates. > > They have 10 and 6 rows respectively. > > I want to plot two scattergraphs, one above the > other. > > The lower graph to contain A (10 points) and the > upper > graph to contain B (six points). > > The x-axes of the two graphs must line up. > > I then want to draw straight lines that connect > points > of B to a particular point (or points) of A. > > How do I do this?
?par and read up on mfrow for the two graphs. Here is something that may help for the lines http://finzi.psych.upenn.edu/R/Rhelp02a/archive/1926.html The code below will work but I had to figure out the arrow coordinates by trial and error and there must be a better way. aa <- c(1:10) bb <- c(1:6) op <- par(mfrow = c(2,1), oma=c(1,0,3,0), las=1, xpd = NA ) plot(aa) plot(bb) arrows( 3,3, 4.9, 21.5, length=0) ______________________________________________ [email protected] 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.
