Gantt chart reference table

Hi, Anonymous 

Given the scenario you've described, it seems you're already leveraging tooltips to show predecessor information when a Gantt bar is selected. To extend this functionality to a table that dynamically updates based on the selected Gantt bar, you might need to utilize Power BI's ability to create relationships and use DAX to filter and display the relevant predecessor data.
Here is a possible solution:
1.Ensure Data Model Relationships.
2.Use DAX to Create a Measure: You will need to create a DAX measure that filters the predecessor information based on the selected task in the Gantt chart. This measure can then be used in your table visual to display only the relevant predecessors. A basic example of such a measure could be:

SelectedPredecessor = CALCULATE(
    MAX('Table'[PredecessorColumn]),
    FILTER(
        'Table',
        'Table'[TaskIDColumn] = SELECTEDVALUE('Gantt'[TaskIDColumn])
    )
)

Return the selected value in the table Visual through SELECTEDVALUE. If you want to know more about the use of DAX, you can click the link below:

https://dax.guide/selectedvalue/

https://dax.guide/

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Best Regards

Jianpeng Li

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