facet_wrap needs labeller parameter like facet_grid #25
I'm trying to implent this. However, I cannot figure out why it doesn't render the parsed labels, instead I get expression(...).
labels_df <- panel$layout[names(facet$facets)]
labels <- apply(labels_df, 1, paste, collapse=", ")
list(t = llply(labels, ggstrip, theme = theme))
What am I missing?