On 01-Sep-09 08:33:41, Gerrit Eichner wrote: > Maybe > > expand.grid( rep( list( 0:1), 10)) > > does what you want. > Best regards -- Gerrit
Thanks! That does seem to do the job. I hadn't thought of expand.grid(). Ted. > On Tue, 1 Sep 2009, > ted.hard...@manchester.ac.uk wrote: > >> 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. >> > > ______________________________________________ > 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. -------------------------------------------------------------------- E-Mail: (Ted Harding) <ted.hard...@manchester.ac.uk> Fax-to-email: +44 (0)870 094 0861 Date: 01-Sep-09 Time: 09:42:18 ------------------------------ 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.
