If for argument's sake, I want the last five elements of a 10-length vector in Python, I can use the "-" operator in the range index so:

>>> x = range(10)

>>> x

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

>>> x[-5:]

[5, 6, 7, 8, 9]

>>>

What is the best way to do this in R? Is there a cleaner way than my current technique which is to use the length() function?

> x <- 0:9

> x

[1] 0 1 2 3 4 5 6 7 8 9

> x[(length(x) - 4):length(x)]

[1] 5 6 7 8 9

>

The question is related to time series analysis btw where it is often useful to work only on recent data