Try this: which.min(abs(x - 5.43))
where x is your vector of numbers. On Wed, Jul 9, 2008 at 12:28 PM, R_Learner <[EMAIL PROTECTED]> wrote: > > I have a long list of numbers [3.4,5.4,3.67,....], and I basically want to > find the index of the number closest to this number that I have, let's say > 5.43. How would I do this without writing a for loop (I have to do this many > times for several lists)? Is there a "lookup" function in R? > > Thanks! > -- > View this message in context: > http://www.nabble.com/Find-the-closest-value-in-a-list-or-matrix-tp18363290p18363290.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. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O ______________________________________________ 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.