Dynamic previous week up to 4 weeks

atjt217 ,

According to my understanding, the formula should be like this,

prevWEEK4 = 
VAR __weekNum = WEEKNUM(TODAY(), 1)
VAR __year = YEAR(TODAY())
VAR __maxWeekNum =
MAXX(
    FILTER( ALL(DateDimension), [Year] = __year - 1),
    [Week_Number]
)
RETURN
SWITCH(
    __weekNum = 1, CALCULATE( [Billed_total], FILTER( DateDimension, [Year] = __year - 1 && [Week_Number] = __maxWeekNum -3 ) ),
    __weekNum = 2, CALCULATE( [Billed_total], FILTER( DateDimension, [Year] = __year - 1 && [Week_Number] = __maxWeekNum -2 ) ),
    __weekNum = 3, CALCULATE( [Billed_total], FILTER( DateDimension, [Year] = __year - 1 && [Week_Number] = __maxWeekNum -1 ) ),
    __weekNum = 4, CALCULATE( [Billed_total], FILTER( DateDimension, [Year] = __year - 1 && [Week_Number] = __maxWeekNum ) ),
    CALCULATE( [Billed_total], FILTER( DateDimension, [Week_Number] = __weekNum-4 ) )
)

prevWEEK3 = 
VAR __weekNum = WEEKNUM(TODAY(), 1)
VAR __year = YEAR(TODAY())
VAR __maxWeekNum =
MAXX(
    FILTER( ALL(DateDimension), [Year] = __year - 1),
    [Week_Number]
)
RETURN
SWITCH(
    __weekNum = 1, CALCULATE( [Billed_total], FILTER( DateDimension, [Year] = __year - 1 && [Week_Number] = __maxWeekNum -2 ) ),
    __weekNum = 2, CALCULATE( [Billed_total], FILTER( DateDimension, [Year] = __year - 1 && [Week_Number] = __maxWeekNum -1 ) ),
    __weekNum = 3, CALCULATE( [Billed_total], FILTER( DateDimension, [Year] = __year - 1 && [Week_Number] = __maxWeekNum  ) ),
    CALCULATE( [Billed_total], FILTER( DateDimension, [Week_Number] = __weekNum -3 ) )
)

prevWEEK2 = 
VAR __weekNum = WEEKNUM(TODAY(), 1)
VAR __year = YEAR(TODAY())
VAR __maxWeekNum =
MAXX(
    FILTER( ALL(DateDimension), [Year] = __year - 1),
    [Week_Number]
)
RETURN
SWITCH(
    __weekNum = 1, CALCULATE( [Billed_total], FILTER( DateDimension, [Year] = __year - 1 && [Week_Number] = __maxWeekNum -1 ) ),
    __weekNum = 2, CALCULATE( [Billed_total], FILTER( DateDimension, [Year] = __year - 1 && [Week_Number] = __maxWeekNum  ) ),
    CALCULATE( [Billed_total], FILTER( DateDimension, [Week_Number] = __weekNum -2 ) )
)

prevWEEK1 = 
VAR __weekNum = WEEKNUM(TODAY(), 1)
VAR __year = YEAR(TODAY())
VAR __maxWeekNum =
MAXX(
    FILTER( ALL(DateDimension), [Year] = __year - 1),
    [Week_Number]
)
RETURN
SWITCH(
    __weekNum = 1, CALCULATE( [Billed_total], FILTER( DateDimension, [Year] = __year - 1 && [Week_Number] = __maxWeekNum) ),
    CALCULATE( [Billed_total], FILTER( DateDimension, [Week_Number] = __weekNum -1 ) )
)

Best regards,
Lionel Chen

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