PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Uwe Ligges On 07.06.2010 09:01, Jeff08 wrote:
Hey Everyone, I have been stumped by this all day. Basically, I have a data.frame of multiple columns. Of concern are "id"& "date" For some reason, oftentimes there are duplicates of data with the same date. I would like to remove the duplicates per different id (removing duplicate dates for the entire data.frame would leave nothing since different id's all have the same dates) subset(x,!duplicated(x$date_)) works for just one ID, but i am having trouble figuring out how to apply this to each subset of IDs (and retaining the original data.frame structure)
______________________________________________ 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.
