On 14-Dec-2013 10:46:10 Ë®¾²Á÷Éî wrote:
> x<-c(1,4,9,20,3,7)
> i want to get a serie c(5,13,29,23,10).
> y <- c()
> for (i in 2:length(x)){
> y[i-1] <- x[i-1]+x[i]}
>
> is there more simple way to get?
x <- c(1,4,9,20,3,7)
N <- length(x)
x[1:(N-1)] + x[2:N]
# [1] 5 13 29 23 10
Best wishes,
Ted.
-------------------------------------------------
E-Mail: (Ted Harding) <ted.hard...@wlandres.net>
Date: 14-Dec-2013 Time: 10:54:00
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