OK, I need help plotting. I have column headings of Day, Wgt, Foodin, Rep, Grp and Tanks. Rep=c(1,2,3) and Tanks=c(a1,a2,a3,a4,a5,a6, c1,c2,c3,c4,c5,c6, h1,h2,h3,h4,h5,h6).
I created a subset where I only would like Rep=2, and Tanks=c(a4,c4,h4) and would like to graph (points) of Wgt and Day. I would think that I only need 3 colors, but when I run with only 3, only 2 lines show up. When I add a 4th color (pink in this case), I get the 3rd line. If I subset for c(a1,a2,a3), it works using three colors. Should be simple, but I dont see it. rm(list=ls()) daily<-subset(raw, subset=Foodin>1 & Rep==2 & Grp=="fed" & Tanks=="a4"| Foodin>1 & Rep==2 & Grp=="fed" & Tanks=="c4"|Foodin>1 & Rep==2 & Grp=="fed" & Tanks=="h4") attach(daily) x11() par(cex=1.4) plot(Day, Wgt col=c("red","blue","purple","pink")[Tanks]) detach(daily) -- M. Keith Cox, Ph.D. Alaska NOAA Fisheries, National Marine Fisheries Service Auke Bay Laboratories 17109 Pt. Lena Loop Rd. Juneau, AK 99801 keith....@noaa.gov marlink...@gmail.com U.S. (907) 789-6603 [[alternative HTML version deleted]] ______________________________________________ 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.