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Helper I
Helper I

What is the logic behind default tooltip of Power BI?

What measure or visual is used in default tooltip of Power bi? How it is taking the values(from X,Y axis) to show up? How it is adjusting the visual size when we mousehover on the visual? For example If I have a line graph with  5 item types(If I select item type as legend) and  if I mousehover on the graph it shows all the 5 items details. If it is having only one line for a single item it shows only one item detail. What DAX measure are we using here ? How it is changing dynamically based on data?

Community Support
Community Support

Hi @Ramya616 ,


This belongs to the underlying structure of Power BI Desktop -- at least we can't figure it out at the application level.

As you can see it will be affected by the aggregate function and filter you choose.

You may take a look at report page tooltips, it might help you to understand the operating mode of tooltip.


Best Regards,


Community Support Team _ Jay
If this post helps, then please consider Accept it as the solution
to help the other members find it.

Yes. I agree that the defalut tooltip shows according to the aggregations and the filters we provided. There should be a measure which provides X,Y axis values accoridng to the legend category.

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