Re: [Rd] Any interest in "merge" and "by" implementations specifically for sorted data?

From: Kevin B. Hendricks <>
Date: Fri 28 Jul 2006 - 17:23:23 GMT


I was using my installed R which is 2.3.1 for the first tests. I moved to the r-devel tree (I svn up and rebuild everyday) for my "by" tests to see if it would work any better. I neglected to retest "merge" with the devel version.

So it appears "merge" is already fixed and I just need to worry about "by".

On Jul 28, 2006, at 3:06 AM, Brian D Ripley wrote:

> Which version of R are you looking at? R-devel has
> o merge() works more efficiently when there are relatively few
> matches between the data frames (for example, for 1-1
> matching). The order of the result is changed for 'sort = FALSE'.


Kevin mailing list Received on Sat Jul 29 03:27:14 2006

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