Hi Benoit

Very nice article. And good timing! I have just added (WIP https://github.com/vaexio/vaex/pull/197) next to groupby support in vaex a binby method that instead of creating a new dataframe produces an xarray DataArray. Vaex is a very much tabular data -> N-d grid oriented dataframe library, and using xarray for that is a very natural choice.

As many library grow around xarray (I’m in particular intersted in viz), vaex wil also benefit from it.

Regards,

Maarten