If anyone can help with this, I would greatly appreciate it. When I subset a dataframe, and then create a table of on of the column variables, the levels of that variable are retained from the parent dataframe. Anyone know how to
for example, say I have data like so: data: X Y a 2 b 2 a 3 b 3 a 5 if I do.... data2=subset(data,X=="a") I get the new data frame: data2: X Y a 2 a 3 a 5 but if I do this... table(data2$X) I would get this: X Y 3 0 additionally when I write... levels(data2$X) I get... Factors w/ 2 levels: "a", "b" I want it to be... Factors w/ 1 level: "a" Normally I would just move on and won't even bother but I'm working with a variable that has 204 levels and only 84 of those are meaningful to me. How can I reset the levels of a column variable? help please! Thanks! -- View this message in context: http://n4.nabble.com/modify-the-levels-of-a-variable-tp1588089p1588089.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.
