see ?segments. And you can tidy up your subsetting with some with's while you're at it, although a function would be nicer still.
Looking at your code, you probably need something like with(subset(framename, hit_traj=="line_drive"), segments(rep(125,length(hit_x)) , rep(-210,length(hit_y)), hit_x, hit_y, col="blue") ) #You can put it all on one line for convenience of repetition but its not as readable with(subset(framename, hit_traj=="line_drive"), points(hit_x, hit_y, pch=20, col="red") ) btw: seems an odd coordinate system. Why not put the hitter at the origin? Steve E >>> lawnboy34 <[EMAIL PROTECTED]> 08/09/2007 00:01:22 >>> I am using R to plot baseball spray charts from play-by-play data. I have used the following command to plot the diamond: plot (0:250, -250:0, type="n", bg="white") lines(c(125,150,125,100,125),c(-210,-180,-150,-180,-210), col=c("black")) I have also plotted different hit locations using commands such as the following: points(subset(framename$hit_x, framename$hit_traj=="line_drive"), subset(-framename$hit_y, framename$hit_traj=="line_drive"), pch=20, col=c("red")) My question: Is there any easy way to plot a line from the origin (home plate) to each point on the graph? Preferably the line would share the same color as the dot that denotes where the ball landed. I have tried searching Google and these forums, and most graphing questions have to do with scatterplots or other varieties of graphs I am not using. Thanks very much in advance. -Jason -- View this message in context: http://www.nabble.com/Plotting-lines-to-sets-of-points-tf4404235.html#a12564704 Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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. ******************************************************************* This email and any attachments are confidential. Any use, co...{{dropped}} ______________________________________________ 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.