Data manipulation restricted to one chapter

[TomFranklin]

I think it'd be helpful for data manipulation to be just kept in one chapter and to include additional functionality such as:

• recoding variables
• changing variable names
• arranging data

[matt-dray]

Yep.

• Recoding: dplyr::if_else() and dplyr::case_when() would be very useful.
• Variable names: dplyr::rename() and dplyr::select() were discussed in the recent sessions (from line 135 here)
• Arranging: dplyr::arrange() was discussed in the last session and I think makes most sense in the context of dplyr::summarise() (line 218 here) for organising data to find 'the largest x value' or whatever.

What about the *_at(), *_if() variants of mutate, etc? Too much to handle this early on? Maybe put it in a tip box.

[TomFranklin]

Yes agree with all the above, to be honest, I've never used _at() or _if()! I could use a tip with those haha

[adamrobinson361]

At and if are really useful! One reference and an quick example could save people loads of time going forward!

[matt-dray]

See here for some code for ideas on tidyverse functions with the SWFC data, covering select, mutate, filter, *_join, group_by, summarise: https://github.com/matt-dray/r-training-eyssar/blob/master/180618_training-doc.R