Hi there, I have a data set: a=cbind(5,2,4,7,8,3,4,11,1,20) I want to count # of data, satistfying a[1]<a[2:10]. Anyone helps me solving this case? Thank you in advance, Jin -- View this message in context: http://www.nabble.com/count-data-with-some-conditions-tp20275722p20275722.html Sent from the R help mailing list archive at Nabble.com.