Issue in slicer on visual

Hi Anonymous ,
Looking at your question, it seems that you are facing following issues :

✅ When "Top" is selected:

• Your matrix visual shows the Top 5 products based on the dynamic time period measure — working as expected.

❌ When "Bottom" is selected:

• The matrix visual returns blank, including the total row, which indicates no data is being returned by the measure.
  
  

🔍 Likely Cause

Your current DAX logic only returns a value when ranking condition is met (Top or Bottom), but it does not handle the case when the slicer is not set properly or RankType is blank, or there's a logic flaw in the SWITCH/IF conditions.

Also, you’re using SWITCH(RankType, ...), which won't handle "Bottom" properly unless the RankType slicer value is exactly "Bottom" — and if it's blank or not selected, it'll return nothing.

We can fix this by following steps :

Use SWITCH(TRUE( )) Instead

Here’s the updated DAX measure that should fix your issue:

DAX

Dynamic Time Period with Top Rank =
VAR N = SELECTEDVALUE('Top N Value'[Top N Value])
VAR RankType = SELECTEDVALUE('TopBottom Selector'[RankType])

VAR ProductRankTop =
    RANKX(
        ALLSELECTED(Products[ProductName]),
        [Dynamic Time Period Measure],
        ,
        DESC
    )

VAR ProductRankBottom =
    RANKX(
        ALLSELECTED(Products[ProductName]),
        [Dynamic Time Period Measure],
        ,
        ASC
    )

RETURN
    SWITCH(
        TRUE(),
        RankType = "Top" && ProductRankTop <= N, [Dynamic Time Period Measure],
        RankType = "Bottom" && ProductRankBottom <= N, [Dynamic Time Period Measure],
        BLANK()
    )

✅What to Check if It’s Still Blank:

1. Ensure your slicer values are exactly "Top" or "Bottom" (no spaces or typos).

2. Confirm Dynamic Time Period Measure returns values across products (not blank for some).

3. If needed, add a card visual showing SELECTEDVALUE('TopBottom Selector'[RankType]) to confirm what’s being captured.

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What if we need to display Top N/Bottom N products and regions both.

It should show only top 5 or bottom 5 products and regions. Only 5 row table.

Like this? 

Hi 
You would need to change your measure as per the steps below 
Steps 
1. Create a Combined Entity Table

You need a table that contains both products and regions as rows. This can be done in Power Query or by using DAX to create a calculated table:

CombinedEntityTable =
UNION(
SELECTCOLUMNS(Products, "EntityType", "Product", "EntityName", Products[ProductName]),
SELECTCOLUMNS(Regions, "EntityType", "Region", "EntityName", Regions[RegionName])
)

2. Update the Measure for Dynamic Ranking

DAX

Dynamic Top Bottom N Entity =
VAR N = SELECTEDVALUE('Top N Value'[Top N Value])
VAR RankType = SELECTEDVALUE('TopBottom Selector'[RankType])
VAR IsTop = RankType = "Top"
VAR IsBottom = RankType = "Bottom"

// Replace this SWITCH with your actual metric selection logic if needed
VAR SelectedMeasure =
[Dynamic Time Period Measure]

// Build a table of all entities with non-blank values for the selected measure
VAR EntityTable =
FILTER(
ALLSELECTED('CombinedEntityTable'[EntityName]),
NOT ISBLANK(CALCULATE(SelectedMeasure))
)

// Calculate the Top and Bottom ranks
VAR EntityRankTop =
RANKX(
EntityTable,
CALCULATE(SelectedMeasure),
,
DESC
)

VAR EntityRankBottom =
RANKX(
EntityTable,
CALCULATE(SelectedMeasure),
,
ASC
)

RETURN
SWITCH(
TRUE(),
IsTop && EntityRankTop <= N, SelectedMeasure,
IsBottom && EntityRankBottom <= N, SelectedMeasure,
BLANK()
)

⭐Hope this solution helps you make the most of Power BI! If it did, click 'Mark as Solution' to help others find the right answers.
💡Found it helpful? Show some love with kudos 👍 as your support keeps our community thriving!
🚀Let’s keep building smarter, data-driven solutions together! 🚀 [Explore More]