Hello everyone, I'm trying to plot the initial and final size of some tadpoles and look at their growth rates (slope of line). They are divided into 6 densities, and so far I have plotted the initial and final sizes (these are means for a pool), and color coded for the 6 densities, but I want a line to connect the initial and final value for each pool (also color coded by density). Any ideas? I'm hoping to see what the effect of density is on growth, and there are 4 replicates for each density. The initial and final sizes are staggered, 1/2 were measured at age 7.3 and 11, and the other 1/2 were measured at age 8.5 and 12.
here's a sample pool age age2 density body_length body_length2 1 1 7.4 11.3 25 0.887 1.322550 2 2 7.4 11.3 100 0.921 1.152000 3 3 7.4 11.3 250 0.896 1.136300 4 4 7.4 11.3 75 0.723 0.955950 5 5 7.4 11.3 500 0.755 1.113300 6 6 7.4 11.3 50 0.869 1.169833 and as far as i've gotten > plot(age,body_length,pch=as.numeric(school), col=as.numeric(density), > xlim=c(6,13), ylim=c(0.7,1.6)) > points(age2, body_length2, pch=as.numeric(school), > col=as.numeric(density)) http://n4.nabble.com/forum/FileDownload.jtp?type=n&id=2023096&name=Screen_shot_2010-04-22_at_11.03.08_PM.png thanks! kristiina -- View this message in context: http://r.789695.n4.nabble.com/help-with-plotting-lines-linking-two-sets-of-points-tp2023096p2023096.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org 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.
