Showing values for bar plots in TableReport

[alamehm]

Problem Description

Hello,
It would be great if we can see the value of a horizontal bar , or a vertical bar in the TableReport plot.
Currently the situation is the following:

• For vertical bars, we cannot know the exact value of a bar (X and Y), especially when we have a single tick label in the axes, with large values .
• For horizontal bars, we can see the percentage of each bar, but not the value as well.

Suggestion:

• Showing more info about each bar on_hover , similar to what is used in other libraries like plotly.
• This way the layout of TableReport will remain the same, but the info will be shown on_hover only

Below is an example of the current TableReport plots.

Feature Description

• Adding an on_hover event to the plots
• This may open the doors to simplify the implementation of "tailored" plots in TableReport

Alternative Solutions

Using off-the-shelf solutions may solve it ex.plotly, but this will add a new dependency for skrub , and it is not straight forward to execute javascript inside templates (currently in skrub, the plots exist inside template tags)

Additional Context

No response

[rcap107]

Hey @alamehm, thanks a lot for the suggestion!

I agree that the current version of the plots in the TableReport could be improved (having only one tick in some cases should be fixed, for example).

I think that having the exact value of a bar could be quite useful, and straightforward to implement. It could also be a kwarg or a configuration parameter for convenience.

I am not keen on adding a dependency on plotly for that, and in general I'm afraid that replacing the current plots with a plotly version would likely introduce a lot of issues.

Tailored plots are a cool idea that I remember from the workshop, and while there is some refactoring to be done, it shouldn't be too difficult.

So, I like the suggestion but I am not convinced that implementing it with plotly would be the best way of doing it 🤔

[alamehm]

@rcap107, I agree with you about the issues of adding a new dependency.

[lionelkusch]

I try to open an Pull Request for plotting the value on the histogram.