Ordering List Items Chronologically
As long as all your names of list elements are in the same format, this should do it: mylist[order(names(mylist))] Thanks for the reproducible example, Sarah
On Tue, Nov 20, 2012 at 11:40 AM, Simon Kiss <sjkiss at gmail.com> wrote:
Dear colleagues,
Is there a way to order list items by date? I have a series of surveys in a list where the name of each list item is the date the survey was taken but the list items are out of order. Each data frame has a variable in it with the survey date as well, if that helps.
Yours, Simon Kiss
#Sample Data
mylist<-list('1991-01-01'=data.frame(a=rep(5,5), survey.date=rep(as.Date('1991-01-01', format='%Y-%m-%d'))), '1979-01-01'=data.frame(aa=rep(5,5), survey.date=rep(as.Date('1979-01-01', format='%Y-%m-%d'), 5)), '2001-01-01'=data.frame(c=rep(6,5), survey.date=rep(as.Date('2001-01-01', format='%Y-%m-%d'), 5)))
mylist
-- Sarah Goslee http://www.functionaldiversity.org