Hi something like
xx<-data.frame(x=sample(1:10,100,replace=T)) y<-c(2,5,8) xx[xx$x%in%y,] HTH Petr On 8 Feb 2006 at 15:21, Bernhard Baumgartner wrote: From: "Bernhard Baumgartner" <[EMAIL PROTECTED]> Organization: Universitaet Regensburg To: r-help@stat.math.ethz.ch Date sent: Wed, 08 Feb 2006 15:21:46 +0100 Priority: normal Subject: [R] dataframe subset > I have a dataframe with a column, say "x" consisting of values, each > value appearing different times, e.g. x: > 1,1,1,1,2,2,4,4,4,9,10,10,10,10,10 ... and a vector, including e.g.: > y: 2,9,10,... I need a subset of the dataframe: all rows where x is > equal to one of the values in y. Currently I use a loop for this, but > because x and y are large this is very slow. Is there any idea how to > solve this problem faster? Thank you, Bernhard > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html Petr Pikal [EMAIL PROTECTED] ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
