v0.20.0

v0.20.0 (2019-12-07)

Diff since v0.19.4

Closed issues:

• Make describe not accept io (#2024)
• Switch cols to kwarg from positional args (#2023)
• Problems sorting dataFrames imported from CSV (#2019)
• Allow rename!\(df, pair::Pair{String, String}\) as a signature (#2017)
• Add an argument allowing to select columns to calculate statistics on for describe (#2014)
• Add flatten function (#2012)
• describe should also apply to Vector (#2010)
• Add :equal support in append! (#2007)
• CSV.read cannot detect "Time" type string (#2005)
• When vcat dataframes, ordering of categorical variables is lost (#2002)
• Allow mix of Symbol and Pair in join (#2001)
• Documenting the difference betwen df[!, :col] and df[:, :col] (#1999)
• select!(df, Not(tuple)) does not work (#1997)
• using DataFrames in Jupiter lab and notebook hangs... (#1996)
• [package code fancyness] Redundant code snippet (#1993)
• Merge meanings of cols keyword arguments between push! and vcat (#1991)
• master still on v0.19.3, though release branch already on v0.19.4 (#1990)
• Bad performance of "by" function for random queries (#1988)
• Warning T is deprecated, use nonmissingtype instead (#1987)
• ERROR: ArgumentError: 'Array{UInt8,1}' iterates 'UInt8' values, which don't satisfy the Tables.jl Row-iterator interface (#1983)
• vcat! or push!(..., columns=:union) (#1982)
• Drop AppVeyor in favour of TravisCI (#1980)
• 32-bit BoundsError (#1978)
• allow by to receive keyword argument for custom output column name. (#1976)
• dropmissing! fails on PooledStrings (#1973)
• Fix tests to pass on Julia nightly (#1967)
• can't join more than two dataframes? (#1962)
• Issues using the df\[!, col\] syntax during broadcasts (#1959)
• API for functions that help reduce memory usage (#1954)
• NamedTuple backing or switchable? (#1949)
• Sorting error using examples from docs (#1945)
• merge names! into rename!` (#1943)
• Allow partial re-ordering for permutecols! (#1942)
• sort! performance (#1927)
• Add kwarg do disallowmissing that skips conversion of columns with missing values (#1922)
• Sync the behavior of push!, vcat and append! in DataFrames.jl with Base (#1904)
• How about raising ArgumentError rather than just calling error() in append!()? (#1869)
• How about raise ArgumentError rather than just calling error() in insertcols!()? (#1867)
• Improve select and select! performance with Not (#1861)
• Make getproperty\(df, col\) return a full length view of the column (#1844)
• Allow empty keys argument in by\(\) (#1837)
• Find a better API for stackdf and meltdf (#1736)
• DataFrames.jl roadmap (#1678)
• setindex!/broadcast! design (#1645)
• Update docstrings to new conventions (#1093)

Merged pull requests:

• Add upper bounds to versions in Project.toml (#2037) (nalimilan)
• Enable CompatHelper (#2036) (nalimilan)
• remove unnecessary line in DataFrame constructor (#2033) (bkamins)
• deprecate stackdf and meltdf (#2031) (bkamins)
• allow integer as from value in rename (#2030) (bkamins)
• Release 0.20.0 (#2028) (bkamins)
• deprecate io support in describe (#2027) (bkamins)
• change Julia from 1.2 do 1.3 on Travis CI (#2026) (bkamins)
• add Array convert for data frame and data frame row (#2025) (bkamins)
• make SubIndex strict about duplicates (#2022) (bkamins)
• Key in warning doesn't reflect the the right entry (#2021) (laborg)
• add cols to describe (#2020) (bkamins)
• allow strings in rename! (#2018) (bkamins)
• Add flatten function (#2013) (pdeffebach)
• update documentation of select (#2011) (bkamins)
• Update docstrings and removed unnecessary internal comments (#2009) (bkamins)
• add names documentation (#2008) (bkamins)
• allow mixing Symbol and Pair{Symbol,Symbol} in on for joining (#2006) (bkamins)
• change how copycols in Vector{<:NamedTuple} constructor (#2004) (bkamins)
• Documenting the difference betwen df[!, :col] and df[:, :col] (#2000) (aminya)
• fix a bug in select! (#1995) (bkamins)
• Add reference to DataFrames Tutorial in index.md (#1994) (dmolina)
• Avoid recompiling combine for each new NamedTuple or Tuple type (#1992) (nalimilan)
• deprecate names! (#1986) (bkamins)
• Rewrite select! to improve performance (#1985) (Ellipse0934)
• add travis on widows + x86 and remove AppVeyor (#1984) (bkamins)
• Fix handling of hash collisions in row_group_slots (#1979) (nalimilan)
• allow more flexible cols in groupby and in particular handle empty cols (#1977) (bkamins)
• Allow permutaion of names in rename! (#1974) (innerlee)
• clean up permutecols! and tests (#1972) (bkamins)
• Add InvertedIndex and in\(\) examples (#1971) (nilshg)
• wrap outstanding tests in data.jl in testset (#1970) (bkamins)
• update documentation of column selection (#1969) (bkamins)
• Fix documentation (#1966) (kojix2)
• allow passing multiple columns arguments to select and select! (#1964) (bkamins)
• allow joins for more than two data frames (#1963) (bkamins)
• allow to create columns using : as row selector (#1961) (bkamins)
• correctly use dotview instead of maybeview in broadcasting contexts (#1960) (bkamins)
• Add :setequal to cols kwarg in vcat, push! and append! (#1958) (bkamins)
• fix Vector for DataFrameRow eltype detection (#1957) (bkamins)
• add error to disallowmissing and disallowmissing! (#1956) (bkamins)
• disallow Base.Generator in setindex! to DataFrameRow (#1951) (bkamins)
• make sure mapcols does not reuse source vectors (#1950) (bkamins)
• fix documentation examples (#1946) (bkamins)
• Fix path to iris.csv (#1944) (nalimilan)
• Use nonmissingtype instead of Missings.T (#1941) (nalimilan)
• Deprecate eltypes (#1940) (nalimilan)
• add skipmissing to by (#1939) (bkamins)
• Stop using makeunique=true for grouping keys in combine (#1938) (nalimilan)
• Make push! more strict (#1937) (bkamins)
• Make sort and sort! type-stable to improve performance (#1934) (nalimilan)
• Cleanup tests (#1931) (bkamins)
• Add @ref links to groupby docstring (#1930) (asinghvi17)
• Get values of grouped columns (#1908) (jlumpe)
• target setindex implementation (#1899) (bkamins)
• Throw more specific error, ArgumentError, rather than a general Error() (#1872) (petershintech)