Disappearing values in ggvis when using tooltip on grouped data

Question

This works fine

library(dplyr)
library(ggvis)

years <- as.factor(c(2013,2013,2014,2014,2015,2015))
months <- c(1,2,1,2,1,2)
values <- c(3,2,4,6,5,1)

d         


        

Answer 1

The problem lies in you putting group_by before ggvis and calling add_tooltip afterwards. Just put group_by part after ggvis call

df %>% 
  ggvis(~months, ~values, key:= ~id) %>% 
  group_by(years) %>%
  layer_points( fill = ~years) %>%
  add_tooltip(all_values, "hover")

no idea why it happens though