Greetings all! I have been searching the Site for a function, say "subsets", such that for instance
subsets(10) would return a (say) matrix of indices to the 2^10 subsets of N items -- perhaps in the form of 2^10 rows each of which is 10 entries each either TRUE or FALSE. Or 1 or 0. Or ... I can of course write my own, using good old looping technology or similar, but it would be good to find one which did it quick and snappy, at the compiled level. A Site Search in Function on "all subsets" didn't seem to yield anything of the kind, which surprised me. Maybe I overlooked something ... (This is prompted by the recent "OT" discussion on "HT vs. HH", to which I want to respond later). With thanks, Ted. -------------------------------------------------------------------- E-Mail: (Ted Harding) <ted.hard...@manchester.ac.uk> Fax-to-email: +44 (0)870 094 0861 Date: 01-Sep-09 Time: 09:09:09 ------------------------------ XFMail ------------------------------ ______________________________________________ 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.