search for: whichmin

...ow: y<-data.frame(item="f",a=3,b=10) y$item<-as.character(y$item) I have to decide if y$a is larger than the smallest of all the values in x$a. If it is, I want y to replace the whole row in x that has the lowest value in column a. This is how I'd do it. if(y$a>min(x$a)){ whichmin<-which(x$a==min(x$a)) x[whichmin,]<-y[1,] } I am wondering if there is a faster way of doing it. What would be the fastest possible way? I'd have to do it, unfortunately, many-many times. Thank you very much! -- Dimitri Liakhovitski gfk.com <http://marketfusionanalytics.com/>...