[R] How to extract rows from data frame based on unique variable groupings

R community, I would like to know how to extract rows from a data frame (DF) such that each row in the new data frame (D.F) represents the first instance of a unique variable pairing in the original dataframe (ordered first by variable V1 then by variable V2). The unique function does not se

[R] Dataframe horizontal scrolling

R experts, I am working with large multivariable data frames (> 50 variables) and I would like to scroll horizontally across my output to view each data frame rather than having to scroll down vertically- wrapped data frames.I have been using R Commander as a programming interface. If I assign

[R] Can't compile R 2.10.1 on AIX

I'm trying to compile R 2.10.1 on AIX, and getting the following errors when it is trying to build the tools package: Error in read.dcf(file = descfile) : Line starting 'Package: tools ...' is malformed! Calls: makeLazyLoading ... code2LazyLoadDB -> loadNamespace -> parseNamespaceFile -> read

[R] [R-pkgs] Update of X2R (with FishGraph) at CRAN, 20 Nov 2008

THIS SOFTWARE IS SUPPLIED WITH NO WARRANTY OF ANY KIND. The authors will endeavor to fix bugs promptly and to add requested features. Send bug reports, suggestions, and extensions to Michael H. Prager - [EMAIL PROTECTED] Southeast Fisheries Science Center National Marine Fisheries Service, N

[R] [R-pkgs] Update of X2R (with FishGraph) sent to CRAN, 30 Jan 2008

TY OF ANY KIND. Nonetheless, the authors will endeavor to fix bugs promptly and to add requested features. Send bug reports, suggestions, and extensions to either author. Michael H. Prager - [EMAIL PROTECTED] Southeast Fisheries Science Center National Marine Fisheries Service, NOAA 101 Pivers Is