"e_tooltip(formatter = )" how to display the interval instead of the average of the histogram column?

[avraam-inside]

Hi!

I have a histogram and the need to see not the average value of the histogram column (2.9 on the picture), but its interval (2.8-3.0). How to do it?

Example code:

iris %>% setDT() %>% 
    e_charts() %>%
    e_histogram(
        Sepal.Width,
        name = "histogram") %>%
    e_density(
        Sepal.Width,
        name = "density",
        y_index = 1) %>%
    e_tooltip(trigger = "axis")

What I see and what I want to see:

[avraam-inside]

I managed to get the gaps in the histograms in other packages right away without any problems. Accordingly, it is very strange that I am having problems in echarts4r with this issue.

For example:

I examined all the parameters in e_tooltip and found no information about neighboring points or about the max and min boundaries of the current bar histogram rendering. Please add information about the column boundaries to the js code (example: e_tooltip(formatter = 'function(param) {param[0].indexMin}') or somethink like that) - they are definitely in the code somewhere.