Hi I get ":Col1 anonymous function))" when I try *(df,:Col1,x->sum(x[:Col2]))* Any ideas. Will take a look at the link in a minute Regards
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 > > >
