[Rd] "Human-style" sort() of alphanum strings?

[Henrik Bengtsson]

Follow up/bug:

mixedsort() gets confused when there are periods in the string(s);

>   print(gtools::mixedsort("a"))
[1] "a"
>   print(gtools::mixedsort("a."))
[1] "a." NA
>   print(gtools::mixedsort("a.b"))
[1] "a.b" NA    NA
>   print(gtools::mixedsort("a.b."))
[1] "a.b." NA     NA     NA
>   print(gtools::mixedsort("a.b.c"))
[1] "a.b.c" NA      NA      NA      NA
>   print(gtools::mixedsort("a.b.c."))
[1] "a.b.c." NA       NA       NA       NA       NA

Is the '.' trigger an incorrect interpretation of a number?

/Henrik

On Tue, Jan 5, 2010 at 3:48 PM, Gabor Grothendieck
<ggrothendieck at gmail.com> wrote:
> See mixedsort in gtools.  Also on http://gsubfn.googlecode.com see
> mixsort example in the section starting ### more examples
>
> On Tue, Jan 5, 2010 at 6:34 PM, Henrik Bengtsson <hb at stat.berkeley.edu> wrote:
>> I know it is fairly easy to implement (though not always well
>> defined), but is there an existing sort function out there that takes
>> alphanum strings and sort them in a "human" fashion?  For example,
>> instead of:
>>
>> z1.doc z10.doc z100.doc z101.doc z11.doc z2.doc
>>
>> it should out put:
>>
>> z1.doc z2.doc z10.doc z11.doc z100.doc z101.doc
>>
>> (from http://www.davekoelle.com/alphanum.html).
>>
>> /Henrik
>>
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>