03a_datamanip.Rmd - Grid references with conditional values

[ZoeLocke]

This section needs fleshing out, I had no idea what was going on, why are things given boolean values? Is that default, or did we add them?

[ZoeLocke]

Actually, the whole chapter needs more info

[stephlocke]

I think I need to go through this with you to get an a understanding of where I'm going wrong.

[ZoeLocke]

Still lost on 8.2.3 Single value selection with lists

Why does it have letters in it? Should you remind people that you're using a variable you stored earlier? Perhaps repeat the step here anyone to keep everything distinct. And why does it have numbers instead in the next example?

I also got lost in 8.5 Mixed grid references, but I don't know if that's just because I'm having trouble focusing

[stephlocke]

Made changes to the single value list section. Will chat about the mixed grids a bit later with you.