[R] alternative to matching/merge?

jim holtman jholtman at gmail.com
Fri Jun 13 03:40:04 CEST 2008


It would be nice if you at least included the code that you are using
and a subset of the data.  Have you run Rprof to determine which of
the functions is consuming the time?

On Thu, Jun 12, 2008 at 3:25 PM, Lana Schaffer <schaffer at scripps.edu> wrote:
>
> Greetings,
> I am doing matching/merge for a table (40919x3) to data
> which is in the form of a list of 1268 data.frames.  Using
> lapply this is taking ~5 minutes.  I know that the match/merge
> functions are time consuming, so is there an alternative to
> this accomplish this goal?  is lapply not efficient?
>
> Lana Schaffer
> Biostatistics/Informatics
> The Scripps Research Institute
> DNA Array Core Facility
> La Jolla, CA 92037
> (858) 784-2263
> (858) 784-2994
> schaffer at scripps.edu
>
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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.
>



-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?



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