So to simplify this a bit: Using dataframe:
name x1 x2 x3 x4 x5 x6 x7 x8 1 fred 2 3 4 6 7 8 9 12 2 fred 4 5 6 8 9 10 11 14 3 fred 6 7 8 10 11 12 13 16 4 fred 8 9 10 12 13 14 15 18 5 james 10 11 12 14 15 16 17 20 6 james 12 13 14 16 17 18 19 22 7 james 14 15 16 18 19 20 21 24 8 harry 16 17 18 20 21 22 23 26 9 harry 18 19 20 22 23 24 25 28 10 john 20 21 22 24 25 26 27 30 11 john 22 23 24 26 27 28 29 32 12 john 24 25 26 28 29 30 31 34 13 john 26 27 28 30 31 32 33 36 Is it possible to plot all columns x1:x8 in a similar manner to: plot(df$x1:df$x8,group=df$name,data=df) It seems like this is almost there, it just needs to plot multiple columns rather than just one...? -- View this message in context: http://r.789695.n4.nabble.com/Group-rows-by-common-ID-and-plot-tp3321955p3325181.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.