On 28/05/2009 5:34 PM, Steve Jaffe wrote:
Sounds simple but haven't been able to find it in docs: is it possible to
sort a vector using a user-defined comparison function? Seems it must be,
but "sort" doesn't seem to provide that option, nor does "order" sfaics
You put a class on the vector (e.g. using class(x) <- "myvector"), then
define a conversion to numeric (e.g. xtfrm.myvector) or actual
comparison methods (you'll need ==.myvector, >.myvector, and
is.na.myvector).
Duncan Murdoch
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