Add a plot title to ggvis

Question

I want to add a title to a ggvis plot. I can\'t find an example anywhere. It\'s simple to do with other R plots, e.g.

library(ggplot2)
library(ggvis)
x <-         


        

Answer 1

Also, to change the font size of the title use this code (adapted from @tonytonov's answer):

add_title <- function(vis, ..., x_lab = "X units", title = "Plot Title") 
{
  add_axis(vis, "x", title = x_lab) %>% 
    add_axis("x", orient = "top", ticks = 0, title = title,
             properties = axis_props(
               axis = list(stroke = "white"),
               title = list(fontSize = 32),
               labels = list(fontSize = 0)
             ), ...)
}