Added the by and now getting ... 'by' has no method matching by(::Array(Any,2), ::Symbol, ::Function in include at boot.jl:245
On Sunday, February 22, 2015 at 8:06:59 PM UTC, Philip Sivyer 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 > > >
