Hi, I have a data frame which format is like below:-
X Y Z 131 22.2 3.4 4.4 150 20.0 12.2 4.5 etc... And I have sorted the data frame. However, I would like to grab one of these elements in the data frame. Also, i would like to number these rows so that when i grab a particular line let say 150, it is able to return me the position of the row rather than the "150". Let say in this example, when i grab a value of 150, it gives me 2 rather than 150. I tried to add anohter extra column of number which is data$NUMBER = row.names(data) on the sorted data but it seems not giving what I wanted which is the "position" of the row 150. Please advise. Thanks. [[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.