see ?rle
url: www.econ.uiuc.edu/~roger Roger Koenker
email rkoenker at uiuc.edu Department of Economics
vox: 217-333-4558 University of Illinois
fax: 217-244-6678 Champaign, IL 61820
On Jan 12, 2006, at 9:56 AM, Mark Leeds wrote:
> I have a vector x with #'s ( 1 or -1 in them ) in it and I want to
> "mark" a new vector with the sign of the value of the a streak
> of H where H = some number ( at the next spot in the vector )
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> So, say H was equal to 3 and
> I had a vector of
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> [1] [2] [3] [4] [5] [6] [7] [8] [9] [10]
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> 1 -1 1 1 1 -1 1 1 -1 -1
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> then, I would want a function to return a new
> vector of
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> [1] [2] [3] [4] [5] [6] [7] [8] [9] [10]
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> 0 0 0 0 0 1 0 0 0 0
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> As I said, I used to do these things like this
> it's been a while and I'm rusty with this stuff.
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> Without looping is preferred but looping is okay
> also.
>
> Mark
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