[R] Running sum

[Marc Schwartz]

On Fri, 2004-11-19 at 16:44 -0600, hadley wickham wrote:
> Perhaps I'm missing something, but isn't the maximum of the cumulative
> sum simply the last value, ie. sum(x)?
> 
> Hadley


Indeed!

And...going back to Sean's original post he did write:

"I just need max(Y)."

Thus, a whole group of us (independently) managed to over-engineer the
solution. 

Presuming of course, that Sean does not require the entire cumulative
sum vector for other purposes.

I wonder what that says about human cognition....

Thanks,

Marc
<Cleaning his bi-focals...>