Re: [R] rpois formula
David Winsemius wrote: > Or: > a = rpois (10, 0.1) > b = rpois (10, 0.15) > > table(a>b, a==b, b>a) table(sign(b-a)) comes to mind too (and table(a,b) is illuminative). -- O__ Peter Dalgaard Øster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~ - (p.dalga...@biostat.ku.dk) FAX: (+45) 35327907 __ 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.
Re: [R] rpois formula
nedmt60 wrote: Hi all, It's been a while since i've used R and I can't remember how to do the following: i have a = rpois (10, x) b = rpois (10, y) what is the code to show that a>b, b>a and a=b to show just the number of occurances? at the moment when I type a>b I get a nice long list of true or false. so i'm hoping to have the following > a = rpois (10, 2) > b = rpois (10, 3) > table(sign(a-b)) -1 0 1 58712 16550 24738 Duncan Murdoch a>b 35000 b>a 25000 a=b 4 thanks in advance __ 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.
Re: [R] rpois formula
Or: a = rpois (10, 0.1) b = rpois (10, 0.15) table(a>b, a==b, b>a) And if you look at that output a bit: table(ab, b>a and a=b . # 79049 12712 8239 .. since FALSE < TRUE -- On Oct 6, 2009, at 9:49 PM, Ian Fiske wrote: try sum(a > b) sum(b > a) sum(a == b) Ian nedmt60 wrote: i have a = rpois (10, x) b = rpois (10, y) what is the code to show that a>b, b>a and a=b to show just the number of occurances? occurrences? at the moment when I type a>b I get a nice long list of true or false. As you _should_ when you supply two vectors to a binary operator. -- David Winsemius, MD Heritage Laboratories West Hartford, CT __ 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.
Re: [R] rpois formula
try sum(a > b) sum(b > a) sum(a == b) Ian nedmt60 wrote: > > i have > > a = rpois (10, x) > b = rpois (10, y) > > what is the code to show that a>b, b>a and a=b to show just the number of > occurances? > at the moment when I type a>b I get a nice long list of true or false. > -- View this message in context: http://www.nabble.com/rpois-formula-tp25774389p25779305.html Sent from the R help mailing list archive at Nabble.com. __ 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.
