Trend calculation dynamically

Hi, amirabedhiafi 

According to your description, I think you can create another measure to display ‘the N weeks prior to the Last N weeks’, so you can use one slicer to get data from two different time periods.

Like this:

Last2NWeeks-LastNWeeks =
VAR LastNWeeks =
    CALCULATE (
        SUM ( 'COVID Data'[COVID Cases] ),
        FILTER (
            ALL ( 'Date' ),
            'Date'[Week Rank]
                >= MAX ( 'Date'[Week Rank] ) - WeekRank[WeekRank Value]
                && 'Date'[Week Rank] <= MAX ( 'Date'[Week Rank] )
        )
    )
VAR Last2NWeeks =
    CALCULATE (
        SUM ( 'COVID Data'[COVID Cases] ),
        FILTER (
            ALL ( 'Date' ),
            'Date'[Week Rank]
                >= MAX ( 'Date'[Week Rank] ) - WeekRank[WeekRank Value] * 2
                && 'Date'[Week Rank] <= MAX ( 'Date'[Week Rank] )
        )
    )
RETURN
    Last2NWeeks - LastNWeeks

If it doesn’t solve your problem, please feel free to ask me.

Best Regards

Janey Guo

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