Hello, I am stuck with selecting the right rows from a data frame. I think the problem is rather how to select them then how to implement the R code.
Consider the following data frame: df <- data.frame(ID = c(1,2,3,4,5,6,7,8,9,10), value = c(34,12,23,25,34,42,48,29,30,27)) What I want to achieve is to select 7 rows (values) so that the mean value of those rows are closest to the value of 35 and the remaining 3 rows (values) are closest to 45. However, each value is only allowed to be sampled once! Any ideas, how to achieve that? Cheers -- View this message in context: http://r.789695.n4.nabble.com/select-rows-by-criteria-tp4434812p4434812.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.
