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The documentation for `aggregate` makes it sound like aggregate.formula should behave identically to aggregate.data.frame (apart from the way the parameters are passed). But it looks like aggregate.formula is quietly removing rows where any of the "output...
The documentation for agrep says it uses the Levenshtein edit distance, but it seems to get this wrong in certain cases when there is a combination of deletions and substitutions. For example: > agrep("abcd", "abcxyz", max.distance=1) [1] 1...
On 11/17/10 6:06 PM, "Joris Meys" <jorismeys at gmail.com> wrote: >Indeed, I get it. If the pattern is "xx", it is only matched against 2 >letters at the same time. All the rest doesn't matter...
Oh wow, that would be it. Not sure how I missed that. Thanks for the tip. Sent from my iPhone On Jan 11, 2011, at 18:56, "David Winsemius" <dwinsemius at comcast.net> wrote: > > On Jan 11, 2011, at 5...
I posted this yesterday to r-help and Ben Bolker suggested reposting it here... Dickison, Daniel <ddickison <at> carnegielearning.com> writes: > > The documentation for agrep says it uses the Levenshtein edit distance, > but it seems to get this wrong in...
A followup to this. I got R to compile, and the following patch seems to fix this issue (I don't think my previous attachment worked so it's pasted inline). There is still a quirk, where tail insertions seem...
I downloaded and compiled the standalone TRE agrep command line program, and I think I have a slightly better idea of what's going on. Basically R's agrep, like the command line tool, is matching all strings that *contain...
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