Searching for functions that would order strings that mix characters and
numbers in a "natural" way (ie, "a1 a2 a10" instead of "a1 a10 a2"), I found
the mixedsort and mixedorder from the gtools package.
1- mixedorder does not work in a "do.call(mixedorder, mydataframe)" call like
the order function does
2- gtools has not been updated in 2.5 years
Are you aware of an equivalent of this function in base R or a another
contributed package (with correction of problem #1)?
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