Hi all, I wish to merge 24 .csv files, each having a common identifier-column ("Name") and do two things:
1. Retrieve the common one's. [Analogy: while merging 2-dataframes, similar to using: merge (.... ,by="Name", all=FALSE) ] 2. Retrieve all, i.e., the union of the rows of 24 files. [again, somthing like: merge (.... ,by="Name", all=TRUE) ] On the web, I could see a few ways people seem to merge more than 2 dataframes. I tried to use library (reshape), but it didn't bring any result: file_list <- list.files() m <- merge_all (file_list, by="Name") Any help would be appreciated. Thank you. regards, Chintanu [[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.