[R] apply calculations to elements in a vector

[Berend Hasselman]

On 16-11-2012, at 15:50, e-letter wrote:

> Readers,
> 
> If a vector consists of:
> 
> 10
> 20
> 30
> 
> how to create a new vector based upon the results of calculations to
> the elements, e.g. addition of successive elements, so that a new
> vector would be:
> 
> 30
> 50
> 
> i.e. 10+20, then 20+30, etc.?

Another way of doing this

rowSums(embed(a,2))

Berend