Documentation for {frame_time}

[SimonDedman]

Hi Thomas,

I was wondering if you wouldn't mind noting down some examples of {frame_time} usage in the gganimate home page or elsewhere, given how atypical a construction it is. It's referenced in a few examples littered around the web but not in the official docs as far as I can see. Your comment here is probably the most useful. I was trying to coerce a monthly transition into month names, for example, and it took me a lot of attempts to work out it should be
ggtitle(paste0("Month = {month.abb[frame_time]}"))

Similarly if there are other instances of the {code as character} construction that would be great to discuss. Thanks in advance!

[psteinb]

I found comments on it here. Indeed, the use could be made explicit in the examples.

[thomasp85]

The main reason why this has not been documented so well is that it is not really part of any specific function, but simply glue syntax... I'd be happy to add some info on this however. Where would you expect to find this information

[SimonDedman]

Hi Thomas,

Maybe a brief note in labs, or similar? Or maybe a general note in Details, explaining it's glue syntax, maybe giving a link to any good glue resources you know, and then putting an example in the Examples, and/or potentially linking to that other Issue?

Cheers!