On Wed, Aug 23, 2017 at 12:35 PM, Bert Gunter <bgunter.4...@gmail.com> wrote: > ummm, Ista, it's 2^n.
ummm yes ughhhh. My point is, if the number of groups is large, check it before hand. If you can check it without embarrassing yourself in public like I did that's even better. Best, Ista > > Cheers, > Bert > > > Bert Gunter > > "The trouble with having an open mind is that people keep coming along > and sticking things into it." > -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) > > > On Wed, Aug 23, 2017 at 8:52 AM, Ista Zahn <istaz...@gmail.com> wrote: >> On Wed, Aug 23, 2017 at 11:33 AM, Christofer Bogaso >> <bogaso.christo...@gmail.com> wrote: >>> Hi again, >>> >>> I am exploring if R can help me to get all possible combinations of >>> members in a group. >>> >>> Let say I have a group with 5 members : A, B, C, D, E >>> >>> Now I want to generate all possible unique combinations with all >>> possible lengths from that group e.g. >>> >>> 1st combination : A >>> 2nd combination : B >>> ..... >>> 5th combination : E >>> 6th combination : A, B >>> 7th combination : B, C >>> .... >>> last combination: A, B, C, D, E >>> >>> Ideally, I have a fairly large group so am looking for some >>> programmatic way to generate all possible combinations. >> >> Be careful, the number of combinations grows pretty quickly. You can >> calculate the number ahead of time with >> >> sum(choose(n, 1:n)) >> >> where n is the number of values in your group. >> >> --Ista >> >>> >>> Any help will be highly appreciated. >>> >>> Thanks for your time. >>> >>> ______________________________________________ >>> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >>> 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 -- To UNSUBSCRIBE and more, see >> 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 -- To UNSUBSCRIBE and more, see 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.
