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tidyr 0.2.0
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@hadley hadley released this 05 Dec 17:33
v0.2.0
2e08772

New functions

  • Experimental expand() function (#21).
  • Experiment unnest() function for converting named lists into
    data frames. (#3, #22)

Bug fixes and minor improvements

  • extract_numeric() preserves negative signs (#20).
  • gather() has better defaults if key and value are not supplied.
    If ... is ommitted, gather() selects all columns (#28). Performance
    is now comparable to reshape2::melt() (#18).
  • separate() gains extra argument which lets you control what happens
    to extra pieces. The default is to throw an "error", but you can also
    "merge" or "drop".
  • spread() gains drop argument, which allows you to preserve missing
    factor levels (#25). It converts factor value variables to character vectors,
    instead of embedding a matrix inside the data frame (#35).
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