running sum of counts

[Tim Wade <wade_tj@yahoo.com>]

Hello:

I have what I'm sure is a very simple question.

I have a vector like this:

1 1 1 1 2 2 2 3 3 4 4 4 4 4 5 5 5 5 5 6 7 3 3 3 2 2.

I would like to generate a sequence consisting of a
running sum of count values, like this:

1 2 3 4 1 2 3 1 2 1 2 3 4 5 1 2 3 4 5 1 1 1 2 3 1 1.

Thanks very much for any assistance!

Tim


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wade_tj@yahoo.com


        
                
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