type
??lag
at the R command line.
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Sent from my phone. Please excuse my brevity.
bestbird <bestbird7...@gmail.com> wrote:
> I have know how to sort and filter and group.
>can anyone answer my another question?
>Is there any function in R like *lead *and *lag * in SQL. They are
>relative
>position function. We can use them to solve problem such as : on
>year-on-year basis, link relative ratio
>
>can anyone give a tips?
>
>--
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>Sent from the R help mailing list archive at Nabble.com.
>
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>PLEASE do read the posting guide
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>and provide commented, minimal, self-contained, reproducible code.
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
