Yemi Oyeyemi
2008-Mar-31 13:59 UTC
[R] Retrieving locations of element of a vector or matrix
Hello all, I have a problem of getting the locations of elements in a vector or matrix. I know one can use the command "which.min" or which.max" to get the location of minimum or maximum values in a vector. But is there any command to get the first k minimum values or maximum values in a vector. Thanks --------------------------------- You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost. [[alternative HTML version deleted]]
Henrique Dallazuanna
2008-Mar-31 14:23 UTC
[R] Retrieving locations of element of a vector or matrix
I think that you can use: x <- sample(1:20, 10) head(sort(x), 5) #First 5 minimum values head(sort(x, decreasing = TRUE), 5) #First 5 maximum values On 31/03/2008, Yemi Oyeyemi <gmoyeyemi at yahoo.com> wrote:> Hello all, > I have a problem of getting the locations of elements in a vector or matrix. I know one can use the command "which.min" or which.max" to get the location of minimum or maximum values in a vector. But is there any command to get the first k minimum values or maximum values in a vector. > Thanks > > > --------------------------------- > You rock. That's why Blockbuster's offering you one month of Blockbuster Total Access, No Cost. > [[alternative HTML version deleted]] > > ______________________________________________ > R-help at 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. >-- Henrique Dallazuanna Curitiba-Paran?-Brasil 25? 25' 40" S 49? 16' 22" O