[R-SIG-Finance] Sequence ID
ggrothendieck at gmail.com
Wed Sep 10 17:35:43 CEST 2008
1000 * cumsum(pmax(0, diff(c(0, test)))) * test
On Wed, Sep 10, 2008 at 10:49 AM, Jorge Nieves
<jorge.nieves at moorecap.com> wrote:
> First I would like to apologize if this is not the right forum for the
> following question.
> I have the following sequence of ZEROS and ONES. I would like to ID
> each "package" of ONES with a unique identifier.
> test = c(0,0,0,0,1,1,1,1,0,0,0,1,1,1,1,1,0,0,0,1,1,1,0)
> An example could be the following vector
> Where all the consecutive ONES have the same ID. I can create the ID
> using a loop, but I was wondering if anyone could recommend another
> method. I suspect that something in the area of factors might help, but
> I do not know what will be the best approach. Any recommendations will
> be highly appreciated.
> Jorge Nieves
> Phone 212.782.7083
> Fax 212.642.7644
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