To achieve the desired behavior in Power BI using DAX measures, you can follow these steps:
Step 1: Create Measures for Filter Selection You mentioned that you have already created measures that return TRUE if the filters are selected. If you haven't done so, you can create these measures. For each filter (A, B, C, D), create a measure like this:
IsFilterASelected = NOT(ISBLANK(SELECTEDVALUE(DimensionTableA[FilterColumnA])))
Repeat this for filters B, C, and D, changing the table and column names accordingly.
Step 2: Create a Dummy Measure Create a measure that calculates the value of the "dummy" variable based on the filter selections. The measure should return 0 if any of the filter measures return TRUE; otherwise, it should return 1. You can use the following DAX expression:
Dummy = IF([IsFilterASelected] || [IsFilterBSelected] || [IsFilterCSelected] || [IsFilterDSelected], 0, 1)
This measure checks if any of the filter measures are TRUE. If at least one of them is TRUE, it returns 0; otherwise, it returns 1.
Step 3: Use the Dummy Measure in Your Visuals Now, you can use the "Dummy" measure in your visuals. When no filter is selected, the "Dummy" measure will return 1, and your data will show where dummy = 1. When any of the filters are selected, the "Dummy" measure will return 0, and your data will show where dummy = 0.
Simply add the "Dummy" measure to the filter area of your visualizations, and it will control the display of data based on your filter selections.
With these measures in place, your Power BI dashboard should work as you described, showing the appropriate data sections based on filter selections.
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