I realize that this is terribly basic, but I just don't seem to see it at this moment, so I would very much appreciate your help.
How shall I transform this dataframe: > df1 Name Index Value 1 a 1 0.1 2 a 2 0.2 3 a 3 0.3 4 a 4 0.4 5 b 1 2.1 6 b 2 2.2 7 b 3 2.3 8 b 4 2.4 into this dataframe: > df2 Index a b 1 1 0.1 2.1 2 2 0.2 2.2 3 3 0.3 2.3 4 4 0.4 2.4 df1 = data.frame(c("a", "a", "a", "a", "b", "b", "b", "b"), c(1,2,3,4,1,2,3,4), c(0.1, 0.2, 0.3, 0.4, 2.1, 2.2, 2.3, 2.4)) colnames(df1) = c("Name", "Index", "Value") df2 = data.frame(c(1,2,3,4), c(0.1, 0.2, 0.3, 0.4), c(2.1, 2.2, 2.3, 2.4)) colnames(df2) = c("Index", "a", "b") Thank you very much. Dana ______________________________________________ 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.