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.
