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Hi!
I have current (2017) annual data that I have to compare against a 3 year rolling average for volume by product. However, for some products, there isn't always annual data available, i.e., some products have data for 2016 but not for 2015, etc.
For ex:
2017, Product A, Country A, Volume
2017, Product B, Country A, Volume
2017, Product C, Country A, Volume
2016, Product A, Country A, Volume
2016, Product B, Country A, Volume
2015, Product A, Country A, Volume
2014, Product A, Country A, Volume
2014, Product C, Country A, Volume
In such case, only product A should have a rolling average which I will then compare with current year volume.
PS. Not pressing but can the same process be extended per country as well?
Can somebody help? I'm fairly new to Power BI. Thanks!
Solved! Go to Solution.
@pan,
What DAX formula do you use to calculate rolling average? I make a test using the following DAX to calculate rolling average, the rolling average measure returns value even some products have no data for 2015. And when you create visuals using different legend level(Product or County) with this measure, the measure returns expected values.
{Base value} rolling average = IF( ISFILTERED({Date}), ERROR("Time intelligence quick measures can only be grouped or filtered by the Power BI-provided date hierarchy."), VAR __LAST_DATE = LASTDATE({Date}.[Date]) RETURN AVERAGEX( DATESBETWEEN( {Date}.[Date], DATEADD(__LAST_DATE, {Periods Before}, {Period}), DATEADD(__LAST_DATE, {Periods After}, {Period}), ), CALCULATE({Base value}) ) )
Reference:
https://community.powerbi.com/t5/Quick-Measures-Gallery/Rolling-Average/m-p/160720
Regards,
Lydia
@pan,
What DAX formula do you use to calculate rolling average? I make a test using the following DAX to calculate rolling average, the rolling average measure returns value even some products have no data for 2015. And when you create visuals using different legend level(Product or County) with this measure, the measure returns expected values.
{Base value} rolling average = IF( ISFILTERED({Date}), ERROR("Time intelligence quick measures can only be grouped or filtered by the Power BI-provided date hierarchy."), VAR __LAST_DATE = LASTDATE({Date}.[Date]) RETURN AVERAGEX( DATESBETWEEN( {Date}.[Date], DATEADD(__LAST_DATE, {Periods Before}, {Period}), DATEADD(__LAST_DATE, {Periods After}, {Period}), ), CALCULATE({Base value}) ) )
Reference:
https://community.powerbi.com/t5/Quick-Measures-Gallery/Rolling-Average/m-p/160720
Regards,
Lydia
March 31 - April 2, 2025, in Las Vegas, Nevada. Use code MSCUST for a $150 discount! Early Bird pricing ends December 9th.
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