Thank you Nicholas. I've found that Urnsamples in the prob package does it too:
urnsamples(1:2, size = 2, replace = TRUE, ordered = FALSE) Thomas ________________________________________ From: WRAY NICHOLAS [nicholas.w...@ntlworld.com] Sent: Tuesday, June 09, 2015 10:52 AM To: Thomas Chesney Cc: r-help@r-project.org Subject: Re: [R] Unordered combinations with repetition You could try expand.grid -- you'd prob need to modify what's beneath a=c(0,1,2) b=c(0,1) c=c(0,1) y<-list() y[[1]]<-a y[[2]]<-b y[[3]]<-c expand.grid(y) This code gives all combinations On 9 June 2015 at 10:11, Thomas Chesney <thomas.ches...@nottingham.ac.uk<mailto:thomas.ches...@nottingham.ac.uk>> wrote: Does anyone know of a function that will return all unordered combinations of n elements from a list with repetition? The combs function in caTools will do this without repetition: combs(1:2, 2) [,1] [,2] [1,] 1 2 What I'd like is: 1 1 1 2 2 2 Thank you, Thomas Chesney This message and any attachment are intended solely for the addressee and may contain confidential information. If you have received this message in error, please send it back to me, and immediately delete it. Please do not use, copy or disclose the information contained in this message or in any attachment. Any views or opinions expressed by the author of this email do not necessarily reflect the views of the University of Nottingham. This message has been checked for viruses but the contents of an attachment may still contain software viruses which could damage your computer system, you are advised to perform your own checks. Email communications with the University of Nottingham may be monitored as permitted by UK legislation. ______________________________________________ R-help@r-project.org<mailto: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. This message and any attachment are intended solely for the addressee and may contain confidential information. If you have received this message in error, please send it back to me, and immediately delete it. Please do not use, copy or disclose the information contained in this message or in any attachment. Any views or opinions expressed by the author of this email do not necessarily reflect the views of the University of Nottingham. This message has been checked for viruses but the contents of an attachment may still contain software viruses which could damage your computer system, you are advised to perform your own checks. Email communications with the University of Nottingham may be monitored as permitted by UK legislation. ______________________________________________ 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.
