extend CategoricalArrays

[tiemvanderdeure]

Extend CategoricalArrays, so categorical(x::DimArray) returns a DimArray with categorical values, and common (documented) operations on categorical arrays work on such categorical DimArrays.

[rafaqz]

Thanks! Good to have

For my understanding is there a reason these things don't "just work" already? Does CategoricalArrays.jl not use similar or not accept AbstractArray ?

[tiemvanderdeure]

They don't work already. categorical errors due to an ambiguous dispatch of copyto!, cut does not error but returns a CategoricalArray (without dimensions). All of the other methods dispatch on CategoricalArray.

[rafaqz]

Ah right, they haven't written it to be extensible at all.