Hadley is a hero. Thank you for the work put into this!
@danhoughton6908
4 жыл бұрын
Hadley is the reason I use R, not python/pandas for data science. Brilliant. I am using nest/unnest for a project. It’s quite slow versus the idea of splitting the data into two tables and joining (2NF). I think this is because I have many key columns to group and each group can be quite small.
@TrentTube
4 жыл бұрын
The new versions are much more intuitive, thank you!
@TrentTube
4 жыл бұрын
3rd normal form = the key, the whole key, and nothing but the key?
@halian.vilela
4 жыл бұрын
What's the point commented in kzitem.info/news/bejne/pWpusHyLbZ6dnqA that Hadley says would destroy the example?
@rexevan6714
5 жыл бұрын
Yeah pivot_long() works like gather()
@TrentTube
4 жыл бұрын
pivot_long() is the new gather() and pivot_wide() is the new spread()
Пікірлер: 7