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th3h0bb5's avatar
th3h0bb5
Icon for Resolver II rankResolver II
8 years ago

Percentile varies between DAX and Reference Line?

I have data about how fast cars are going. I want to show the 99th Percentile of max speed. I've done this two ways. In DAX with the PERCENTILE.INC() formula:   And with an Analysis reference...
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v-piga-msft's avatar
v-piga-msft
Icon for Resident Rockstar rankResident Rockstar
8 years ago

Hi  th3h0bb5,

 

As I know, the PERCENTILE.INC() function has a little different from Percentile line in Analytics pane.

 

The fucntion is calculated for each row of a table and the Percentile line is used for analysis the chart.

 

Best Regards,

Cherry

th3h0bb5's avatar
th3h0bb5
Icon for Resolver II rankResolver II
8 years ago

Hi Cherry,

 

But how exactly would that impact the final results? The Tabular view has Car | Max Speed | Calculation. The Visualization has Car | Max Speed | Calculation. If the input is the same, what is PowerBI doing that causes it to produce different results?

 

Cheers,


Hobbs

  • v-piga-msft's avatar
    v-piga-msft
    Icon for Resident Rockstar rankResident Rockstar
    8 years ago

    Hi th3h0bb5,

     

    Sorry for the previous reply. 

     

    By my tests again on the version Power BI Desktop 2.60.5169.3201 64-bit (July 2018), it seems that the value of PERCENTILE.INC() is the same with the value of Percentile Line.

     

     

    You could have a reference of my attachment.

     

    Best Regards,

    Cherry

    • th3h0bb5's avatar
      th3h0bb5
      Icon for Resolver II rankResolver II
      8 years ago

      Hmm. Interesting. I wonder if perhaps it's something in my data that is causing the issue. Perhaps one handles NULLS differently than the other?

      • v-piga-msft's avatar
        v-piga-msft
        Icon for Resident Rockstar rankResident Rockstar
        8 years ago

        Hi th3h0bb5,

         

        Have you solved your problem?

         

        If you have solved, could you please share the solution or always accept the replies making sense as solution to your question so that people who may have the same question can get the solution directly.

         

        If you still need help, could you share a dummy pbix file which can reproduce the issue, so that we can help further investigate on it? You can upload it to OneDrive or Dropbox and post the link here. Do mask sensitive data before uploading.)

         

        Best Regards,

        Cherry