[R] breaking up n object into random groups

say n = 100 I want to partition this into 4 random groups wheren n1 + n2 + n3 + n4 = n and ni is the number of elements in group i. Thank you for you help -- View this message in context: http://r.789695.n4.nabble.com/breaking-up-n-object-into-random-groups-tp4147476p4147476.html Sent from the

Re: [R] breaking up n object into random groups

On Dec 2, 2011, at 10:09 AM, statfan wrote: say n = 100 I want to partition this into 4 random groups wheren n1 + n2 + n3 + n4 = n and ni is the number of elements in group i. Try assigning with a sample() from: unlist(mapply(rep, c(1:4), each=c(n1,n2,n3,n4))) -- David Winsemius, MD

Re: [R] breaking up n object into random groups

There are a million ways to do this, probably. brks - c(1,sort(sample(seq_len(99),3)),100) ## 4 random groups and then use brks as the breaks parameter in cut() with include.lowest = TRUE ?cut -- Bert On Fri, Dec 2, 2011 at 7:09 AM, statfan irene_vr...@hotmail.com wrote: say n = 100 I