Create interactive labeller
gf_labeller_interactive(..., .mapping)a labeller
Arguments of the form name = ~ expr are used to create
.mapping (if .mapping is missing). Other arguments (or all arguments
if .mapping is not missing) are passed through to ggplot2::labeller().
An aesthetic mapping as could be created with
ggplot2::aes() or ggplot2::aes_(). If missing (the typical use case),
.mapping is created from the arguments in ... that have the form
name = ~ expr.