how can i sort a column of data.frame ?
? order df<-data.frame(a=rnorm(20),b=rpois(20,5),c=runif(20)) or<-order(df$b,decreasing=T) df.or<-df[or,] Weidong Gu Department of Medicine University of Alabama, Birmingham 1900 University Blvd., Birmingham, Alabama 35294 -----Original Message----- From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of hanen Sent: Monday, May 19, 2008 1:11 PM To: r-help at r-project.org Subject: [R] how can i sort a column of data.frame ? i have a data.frame with several columns that i want to sort one of them (one column) by descending order in such way that this sorting out recover all colums. what should i do?
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