Update from email outside of this thread: Justin Haynes writes:
> matrices will help, but two quick solutions: > > if you are looking for single items to go in the some_value space, use == > instead of %in% and you'll notice speedups. The second more involved > option is to take a look at the package data.table. > > it provides a wrapper for data.frame that has some impressive > optimizations as well as allowing for SQL like indexing and syntax. > > > hope that helps! > Justin, thanks. Here's the before and after clock: Before: user system elapsed 0.976 0.164 2.607 After: user system elapsed 0.624 0.156 1.810 You are correct. I still need to get that elapsed down even more. Data.table sounds like a good option. I'll look into it more. Thank you. -- View this message in context: http://r.789695.n4.nabble.com/Data-Frame-Search-Slow-tp4096906p4097261.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.