Could you make your example reproducible? That is, include some sample input and output. You talk about a column of numbers and then you seem to work with named lists and I can't reconcile your words with the code I see. -- Sent from my phone. Please excuse my brevity.
On December 23, 2016 3:40:18 PM PST, arthur brogard via R-help <r-help@r-project.org> wrote: >I've been looking but I can't find a function to sum difference. > >I have this code: > > >rates$thisone <- c(diff(rates$Int), NA) >rates$nextone <- c(diff(rates$Int, lag=2), NA, NA) >rates$lastone <- (rates$thisone + rates$nextone) > > >It is looking down one long column of numbers. > >It sums the difference between the first two and then between the first >and third and so on. > >Can it be made to automatically sum the difference between the first >and subsequent to the end of a list? > >______________________________________________ >R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
