Hi, Try this: Not sure whether this is the fastest: set.seed(932) vec1<-sample(1:10,6,replace=TRUE) vec2<-sample(1:7,3,replace=TRUE) vec2[vec2%in%vec1] #[1] 5 library(rbenchmark) benchmark(isTRUE(all(vec2%in%vec1)),replications=1e4) # test replications elapsed relative user.self sys.self #1 isTRUE(all(vec2 %in% vec1)) 10000 0.295 1 0.272 0 # user.child sys.child #1 0 0
A.K. ----- Original Message ----- From: Atte Tenkanen <atte...@utu.fi> To: "r-help@r-project.org" <r-help@r-project.org> Cc: Sent: Thursday, September 27, 2012 5:00 PM Subject: [R] How to test if there is a subvector in a longer vector Hi, There are certainly several ways to test, whether a longer vector includes a subvector. For instance, c(1,4,6) is included in c(2,1,1,4,6,3). How to test this and which would be the fastest way to do it? Best, Atte Tenkanen, FT, MuM http://users.utu.fi/attenka/ ______________________________________________ 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. ______________________________________________ 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.
