Forum Discussion

andy291086's avatar
andy291086
Frequent Visitor
2 years ago
Solved

DAX Logic for Calculating Rolling Sum

Hi Team,    I am new to Power BI and DAX. I had been assigned to convert an Excel report into Power BI which has the following calculations.    I am stuck up with the calculations for Behin...
  • Anonymous's avatar
    Anonymous
    2 years ago

    Hi andy291086 ,

    I created a sample pbix file(see the attachment) for you, please check if that is what you want.

    Week Number = VALUE(RIGHT('Table'[Week], LEN('Table'[Week]) - 5))
    Column = 
VAR _preweek =
    CALCULATE (
        MAX ( 'Table'[Week Number] ),
        FILTER ( 'Table', 'Table'[Week Number] < EARLIER ( 'Table'[Week Number] ) )
    )
VAR _prewbdays =
    CALCULATE (
        MAX ( 'Table'[Behind Days] ),
        FILTER ( 'Table', 'Table'[Week Number] = _preweek )
    )
RETURN
    _prewbdays + ( 'Table'[Target Days] - [Rolling Average - Days] ) / 'Table'[Weeks Left]

    Best Regards

Anonymous's avatar
Anonymous
Not applicable
2 years ago

Hi andy291086 ,

I created a sample pbix file(see the attachment) for you, please check if that is what you want.

Week Number = VALUE(RIGHT('Table'[Week], LEN('Table'[Week]) - 5))
Column = 
VAR _preweek =
    CALCULATE (
        MAX ( 'Table'[Week Number] ),
        FILTER ( 'Table', 'Table'[Week Number] < EARLIER ( 'Table'[Week Number] ) )
    )
VAR _prewbdays =
    CALCULATE (
        MAX ( 'Table'[Behind Days] ),
        FILTER ( 'Table', 'Table'[Week Number] = _preweek )
    )
RETURN
    _prewbdays + ( 'Table'[Target Days] - [Rolling Average - Days] ) / 'Table'[Weeks Left]

Best Regards