Hi, I just started using R and need some guidance.
I need to create a time series chart in R, but the problem is the data is not numeric. The data is in the following format Study A A B B B A C C D Then there is also another column with dates. How can I manipulate this in order to have something that will count the number of unique entries and group them. Say A = 3 B= 3 C=2 D=1 Thanks -- View this message in context: http://r.789695.n4.nabble.com/Data-Manipulation-tp2534662p2534662.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.