plotly + ggplot2: Some tooltips missing in stacked barplot

Question

Given for example

library(ggplot2)
library(plotly)
df <- data.frame(V1=gl(6,20), V2=gl(40,3))
p <- ggplot(df, aes(x=V1, fill=V2)) + geom_bar(color="white")
ggplotly(p)

some bar segments show no tooltip/hover information, whereas the legend displays the huge number of factor levels nicely (=scroll bar). How can I fix this?

I'm using

packageVersion("ggplot2")
# [1] ‘2.2.0’
packageVersion("plotly")
# [1] ‘4.5.6’

Edit/FYI: Crossposted to GitHub.

I really don't have an answer (maybe because you are only using numbers?) but if you use the diamonds dataset with your code it works: df <- diamonds[sample(1:nrow(diamonds), size = 1000),] ; p <- ggplot(df, aes(x=color, fill=cut)) + geom_bar(color="white"); ggplotly(p) — MLavoie
– MLavoie, Commented Dec 16, 2016 at 16:57
True. I suspect there's a limit in terms of number of levels; the error (?) originally occured with alphanumeric factor levels. — lukeA
– lukeA, Commented Dec 16, 2016 at 17:10

derive111 · Accepted Answer · 2016-12-26 19:24:08Z

2

adding some code. We can fix it:

library(ggplot2)
library(plotly)
df <- data.frame(V1=gl(6,20), V2=gl(40,3))
p <- ggplot(df, aes(x=V1, fill=V2)) + geom_bar(color="white")
fixed<-ggplotly(p)

for (i in 1:length(levels(df$V2))){
  fixed$x$data[[i]]$text[length(fixed$x$data[[i]]$text)+1] <- c("")
}
fixed

answered Dec 26, 2016 at 19:24

derive111

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2 Comments

Marijn Stevering Over a year ago

Could you maybe explain what this does and why it works?

derive111 Over a year ago

It is a hack of the estructure of the R object.

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