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    • Rolling Weeks

    Rolling Weeks

    04-07-2018 15:01 PM - last edited 06-27-2018 10:41 AM

    Super User Greg_Deckler
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    Rolling Weeks

    ‎04-07-2018 03:01 PM

    Similar to Rolling Months, https://community.powerbi.com/t5/Quick-Measures-Gallery/Rolling-Months/m-p/391499

     

    it is often handy to have the ability to do rolling weeks.

     

    For this to work, previous Quick Measures of Week Starting and Week Ending are required. https://community.powerbi.com/t5/Quick-Measures-Gallery/Week-Starting/td-p/391487

     

    The attached file contains all of the necessary measures, Week Starting, Week Ending, the Rolling Week Start and Rolling Week End measures and finally a measure that demonstrates how to use the dates returned from Rolling Week Start and Rolling Week End.

     

    Rolling Week End

     

    Rolling Week End = 
    VAR DateFrom = MAX([Date])
    VAR WeeksBack = 0
    VAR tmpCalendar = CALCULATETABLE('Calendar',ALL('Calendar'))
    VAR tmpCalendar1 = ADDCOLUMNS(tmpCalendar,"WeekNum",WEEKNUM([Date]),"WeekEnding",[mWeekEnding],"WeekStarting",[mWeekStarting])
    VAR LookupDate = DateFrom-7*WeeksBack
    VAR tmpCalendar2 = FILTER(tmpCalendar1,[Date]=LookupDate)
    RETURN MAXX(tmpCalendar2,[WeekEnding])

     

    Rolling Week Start

     

    Rolling Week Start = 
    VAR DateFrom = MAX([Date])
    VAR WeeksBack = 4
    VAR tmpCalendar = CALCULATETABLE('Calendar',ALL('Calendar'))
    VAR tmpCalendar1 = ADDCOLUMNS(tmpCalendar,"WeekNum",WEEKNUM([Date]),"WeekEnding",[mWeekEnding],"WeekStarting",[mWeekStarting])
    VAR LookupDate = DateFrom-7*(WeeksBack-1)
    VAR tmpCalendar2 = FILTER(tmpCalendar1,[Date]=LookupDate)
    VAR retValue = MAXX(tmpCalendar2,[WeekStarting])
    RETURN IF(ISBLANK(retValue),MINX(tmpCalendar1,[WeekStarting]),retValue)

     

    Measure (calculates a value using Rolling Weeks)

     

    Measure = 
    VAR rollweekstart = [Rolling Week Start]
    VAR rollweekend = [Rolling Week End]
    VAR tmpTable = ALL('Calendar')
    VAR tmpTable1 = FILTER(tmpTable,[Date]>=rollweekstart&&[Date]<=rollweekend)
    RETURN AVERAGEX(tmpTable1,[Value])

     

     

     

     

    eyJrIjoiMTUzZTYxMzItOTkxZC00ZjE2LThjM2EtYzA0NGE2YjM2Mzk2IiwidCI6IjRhMDQyNzQzLTM3M2EtNDNkMi04MjdiLTAwM2Y0YzdiYTFlNSIsImMiOjN9


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    DAX is easy, CALCULATE makes DAX hard...
    RollingWeeks.pbix
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    ‎07-11-2021 04:39 PM

    @Greg_Deckler Would you be able to help with how the DAX would change if there were duplicate dates...essentially would need to sum by each week and then average?

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