Frederico, the best way to solve this is to provide a reproducible example. If you file a bug report at the following with an example, there'll be less of a chance that this gets lost:
https://github.com/JuliaStats/DataFrames.jl/issues/ On Wed, Oct 8, 2014 at 3:32 PM, Frederico Novaes <[email protected]> wrote: > Hi, > > I have a DataFrame with 10 "columns", say :c1 to :c10. I need to do a > groupby, grouping by 4 of these columns. When I try, > > $ groupby(df,[:c1,:c3,:c4,:c7]) > > I get the following error: > > MemoryError() > while loading In[13], in expression starting on line 1 > > in groupsort_indexer at > /home/cloudopen/.julia/v0.3/DataArrays/src/grouping.jl:7 > in groupsort_indexer at > /home/cloudopen/.julia/v0.3/DataArrays/src/grouping.jl:5 > in groupby at > /home/cloudopen/.julia/v0.3/DataFrames/src/groupeddataframe/grouping.jl:44 > > > Any help ? > > Thanks.
