hoverinfo displaying over bars in plotly histogram R

Question

I'm trying to create an histogram with plotly, but when I define the 'hoverinfo' information, it displays the information over the bars and not 'inside'.

diamonds %>% plot_ly(x = ~cut, color = ~clarity, hoverinfo = 'text', text = ~carat)

I tried to use add_histogram() as well, but nothing seems to work. What should I do?

Answer 1

I was intrigued by your comment that you had the most recent plotly version, so I downloaded it and I could replicate your issue. It looks like there has been a change in the way the default text argument is treated in plotly.js, see here:

textposition for bar traces now defaults to auto so if you want to use text without it appearing on the figure, you’ll need to explicitly set textposition="none"

Unfortunately, when type="histogram", there is no textposition argument. The way to fix this in your case is to replace the text argument with hovertext:

library(plotly)
diamonds %>% 
    plot_ly(
        x = ~cut, 
        color = ~clarity,
        type = "histogram",
        hoverinfo = "text", 
        hovertext = ~carat
    )