a[!is.element(a, b)] Jussi -----Original Message----- From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Alexander Sokol Sent: 11. marraskuuta 2004 15:34 To: r-help at stat.math.ethz.ch Subject: [R] Logical "and" Hello, I have the following very simple problem: Say I have two vectors, a<-c(1,7,4,5,9,11) b<-c(7,4,9) I would like to create a vector containing the elements in a which are not in b. Obviously, this is possible by writing a[a!=b[1] & a!=b[2] & a!=b[3]] But I would like a solution which is applicable to the situation where the number of elements in b is unknown. I have looked in the R manuals, the FAQ and the mailing lists, but have been unable to find a solution. Thank you for your replies, Alexander ______________________________________________ R-help at 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
Logical "and"
1 message · Mäkinen Jussi