I have succeeded in controlling the line colors and point symbols of each Method plotted in each frame of my xyplot, using the help files you suggested so that some methods can be represented by the same color and distinguished by symbols using the following code (I can not, however, seem to make the key reflect these color and symbol changes):
#assign colors to each method lcol <- rep(0, 243) lcol[common$Method==1] <- 1 lcol[common$Method==2] <- 2 lcol[common$Method==3] <- 3 lcol[common$Method==4] <- 6 lcol[common$Method==5] <- 4 lcol[common$Method==6] <- 4 lcol[common$Method==7] <- 5 lcol[common$Method==8] <- 5 lcol[common$Method==9] <- 6 #assign the type of symbol that corresponds to each method ptype <- rep(0, 243) ptype[common$Method==1] <- NA ptype[common$Method==2] <- NA ptype[common$Method==3] <- NA ptype[common$Method==4] <- 3 ptype[common$Method==5] <- 6 ptype[common$Method==6] <- 2 ptype[common$Method==7] <- NA ptype[common$Method==8] <- NA ptype[common$Method==9] <- NA xyplot(Yvar~ Xvar| Avar * Bvar, data=common.without.Method478, groups=method.not478.f, type="o", col=lcol, pch=ptype, cex=0.5, auto.key=list (text=c("Method 1","Method 2","Method 3","Method 4a","Method 4b","Method 9"), points = TRUE, lines = TRUE, col=c(1,2,3,4,4,6), cex=1, pch=c(NA,NA,NA,6,2,NA))) The above code obtains the desired plot, and is the closest that I have come to obtaining the desired key. Using the above code, within the key, I obtain the appropriate text and the text is colored such that the text "Method 1" corresponds to the color of method 1 in the plot. The symbol shape and line color to the right of this text, however, does not change from its default settings, and therefore does not reflect the plot. I am trying to obtain black text with appropriate symbols and appropriately colored lines to the right. Have I misinterpreted the syntax of the atuo.key function? - Genevieve -- View this message in context: http://www.nabble.com/customizing-the-color-and-point-shape-for-each-line-drawn-using-lattice%27s-xyplot-tf4351934.html#a12434887 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.