Last 4 weeks Year on Year

[Anonymous]

Am calculating year on year based on last 4 weeks. My issue is for some reason my calculation seems to stop working as soon as i filter, i am working with Start of Week dates which makes it a little bit of a pain;

Last 4 weeks = CALCULATE(SUM(Revenue[Cost]), DATESINPERIOD(Revenue[Start of Week Date],MAX(Revenue[Start of Week Date]),-27,DAY))

Last 4 weeks Last Year for Comparison = CALCULATE(SUM(Revenue[Cost]), DATESINPERIOD(Revenue[Start of Week Date],(MAX(Revenue[Start of Week Date])-365),-27,day))

What am i doing wrong here?

[v-chenwuz-msft · Accepted solution]

Hi @Anonymous ,

The problem is the DATESINPERIOD(). The table Revenue inputed to DATESINPERIOD to be calculated has been filtered by field in the visual. So the result of DATESINPERIOD is not all Revenue table.

For example , the result of MAX(Revenue[Start of Week Date]) is 2021/11/19, then the result of DATESINPERIOD will be 2021/11/1 to 2021/11/19 instead of 2021/10/24.

May be you can try FILTER() instead of DATESINPERIOD().

Last 4 weeks =
CALCULATE(
    SUM( Revenue[Cost] ),
    FILTER(
        ALL( Revenue ),
        Revenue[Start of Week Date]
            >= MAX( Revenue[Start of Week Date] ) - 27
            && Revenue[Start of Week Date] <= MAX( Revenue[Start of Week Date] )
    )
)

If I misunderstood you please let me know. And you can share some example data without sensitive data.

Best Regards

Community Support Team _ chenwu zhu

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