-
Experimental new
expand()
function (#21). -
gather()
has better defaults iskey
andvalue
are not supplied. -
If
...
is ommitted,gather()
selects all columns (#28) -
Spread gains
drop
argument, which allows you to preserve missing factor levels (#25). -
Spread converts factor value variable to character, instead of embedding matrix inside data frame (#35).
-
Preserve negative signs in
extract_numeric()
(#20). -
separate()
gainsextra
argument which lets you control what happens to extra pieces. The default is to throw an "error", but you can also "merge" or "drop". -
gather()
performance is now comparable toreshape2::melt()
(#18). -
Added experiment unnest function for converting named lists into data frames. (#3, #22)