add tooltip with count to layer_bars

Question

Suppose I have the following graph

library(ggvis)
mtcars%>% ggvis(~factor(cyl)) %>% layer_bars()

How can I add a tooltip with the count variable?

Thanks

score 1 · Accepted Answer · answered Jun 19 '15 at 16:53

1

This does the trick:

library(ggvis)
mtcars  %>% ggvis(~factor(cyl)) %>% layer_bars() %>%
  add_tooltip(function(df) (df$stack_upr_ - df$stack_lwr_))

answered Jun 19 '15 at 16:53

Ignacio

`function(df) (df$stack_upr_)` is enough, see [this answer](http://stackoverflow.com/a/34003037/3409615) – janosdivenyi Dec 01 '15 at 09:30

1 Answers1