Le samedi 23 mai 2015 à 08:09 -0700, Martin Somers a écrit : > Was trying something like this earlier > > > df[df[:donor] .== "Patient" & df[:pregnant] .== "yes", :] > > > > but doesnt seem to work is this even possible or am I going to have > sub divid the operations > what the what most efficient syntax You just need to add parentheses like this: df[(df[:donor] .== "Patient") & (df[:pregnant] .== "yes"), :]
By the way, DataFramesMeta offers convenience macros that you may find useful for this kind of operations: https://github.com/JuliaStats/DataFramesMeta.jl Regards
