bump? I would love to have this ... should I try to dig in and write it myself or is it likely to be tricky?
Hmmm, it shouldn't be too hard if you follow a parallel path to facet_grid. One roadblock is figuring out what arguments the function should accept.
I'm trying to implent this. However, I cannot figure out why it doesn't render the parsed labels, instead I get expression(...).
This sounds like a great feature, but unfortunately we don't currently have the development bandwidth to support it. If you'd like to submit a pull request that implements this feature, please follow the instructions in the development vignette.