There have been posts in the past regarding similar questions, but many of them looked dated. I am using xyplot to show variability within my replicates, and so far so good, but I would like to refine the plot. I've used the code below to graph my response variable against year (coded as a factor with three levels 2009, 2010, 2011). Each replicate is in a different panel (|field). My group variable is a factor (Management) with three levels. I would like to define the symbol and color of each factor level.
xyplot(Hill.s.diversity ~ Year| Field, group=Management, layout=c(2,3), main="Hills evenness by Management Block, June 2009-2011", ylab="Hills evenness", data=summer_pr_avg) -- View this message in context: http://r.789695.n4.nabble.com/identifying-groups-in-xyplot-tp3922985p3922985.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.