Re: [Rd] Subsetting a data frame vs. subsetting the columns

From: Joshua Wiley <jwiley.psych_at_gmail.com>
Date: Wed, 28 Dec 2011 09:24:23 -0800

On Wed, Dec 28, 2011 at 8:14 AM, Simon Urbanek <simon.urbanek_at_r-project.org> wrote:
> Hadley,
>
> there was a whole discussion about subsetting and subassigning data frames (and general efficiency issues) some time ago (I can't find it in a hurry but others might)

Yep, a rather lengthy discussion at that http://r.789695.n4.nabble.com/speeding-up-perception-td3640920.html. IIRC, there was also some off list stuff about what it would take to push to C, which I may have in my inbox if anyone wants.

Cheers,

Josh

-- 
Joshua Wiley
Ph.D. Student, Health Psychology
Programmer Analyst II, Statistical Consulting Group
University of California, Los Angeles
https://joshuawiley.com/

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Received on Wed 28 Dec 2011 - 17:28:04 GMT

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