I believe this is covered in the DataFrames.jl documentation at http://dataframesjl.readthedocs.org/en/latest/split_apply_combine.html.
Best, Ista On Feb 22, 2015 3:07 PM, "Philip Sivyer" <[email protected]> wrote: > Hi > Is it possible to summarize data in a data frame eg > > Col1 Col2 > A 2 > A 2.5 > B 7 > B 2 > > I would like sum Col2 grouping by Col1 - output would be > A , 4.5 > B,9 > > > Regards > > >
