ggplotly modifies values before creating tooltip

[dmurdoch]

When drawing a geom_bar plot with negative values, a tooltip will display them as positive instead.

library(ggplot2)
library(plotly)
dataset <- data.frame(x = 1:2, y = 1:2 - 3, z = 1:2 - 3) # z == y
p1 <- ggplot(dataset, aes(x, y, z = z)) + geom_bar(stat = "identity")
ggplotly(p1, tooltip = c("y", "z"))

Even though y and z contain the same negative values, only z is displayed as negative in the tooltip:

This may be related to #560, #616 or #874. It was reported on StackOverflow here: https://stackoverflow.com/q/63862157/2554330

[wcwr]

The issue is still unresolved, but adding geom_point will at least show the correct value in tooltip :

library(ggplot2)
library(plotly)
dataset <- data.frame(x = 1:2, y = 1:2 - 3, z = 1:2 - 3) # z == y
p1 <- ggplot(dataset, aes(x, y, z = z)) + geom_bar(stat = "identity") +
  geom_point(size=4) #Add geom_point
ggplotly(p1, tooltip = c("y", "z"))