[R] Function for all 2^N subsets of N

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

Re: [R] Function for all 2^N subsets of N

Maybe expand.grid( rep( list( 0:1), 10)) does what you want. Best regards -- Gerrit - AOR Dr. Gerrit Eichner Mathematical Institute, Room 305 E gerrit.eich...@math.uni-giessen.de Justus-Liebig-University

Re: [R] Function for all 2^N subsets of N

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!

Re: [R] Function for all 2^N subsets of N

My first thought was the odometer() function, which is often useful for tasks like this. To my surprise it is not a part of the current R. I wonder why? It shouldn't be an Splus copyright issue as this was a part of my original S distribution (before Splus even existed), and used in an