Re: [R] two scatter plots in one

liujb wrote: Dear R users, I need to compare two scatter plots, plot(x1, y1) plot(x2, y2) and would like to plot them in the same figure. How do I do it? Hi liujb, How about this: plot(x1,y1,xlim=range(c(x1,x2)),ylim=range(c(y1,y2)),col=red) points(x2,y2,col=blue) Jim

Re: [R] two scatter plots in one

lattice and ggplot2 also offer a general way of doing this, # first create a data.frame in the long format containing the two data sets x1 - seq(-10, 10) x2 - seq(-8, 12) y1 - sin(x1/3) y2 - cos(x2/2) d1 - data.frame(x=x1, y=y1, var=1) d2 - data.frame(x=x2, y=y2, var=2) library(reshape) d -

[R] two scatter plots in one

Dear R users, I need to compare two scatter plots, plot(x1, y1) plot(x2, y2) and would like to plot them in the same figure. How do I do it? Thank you. -- View this message in context: http://www.nabble.com/two-scatter-plots-in-one-tp21963375p21963375.html Sent from the R help mailing list

Re: [R] two scatter plots in one

Set the xlim/ylim to the extent of the data and then do plot(x1, y1, xlim=range(x1, x2), ylim=range(y1, y2)) points(x2, y2, col='red') On Wed, Feb 11, 2009 at 3:43 PM, liujb liujul...@yahoo.com wrote: Dear R users, I need to compare two scatter plots, plot(x1, y1) plot(x2, y2) and would