Calculate 7 days back for each date to have a smoother graph

[Marshy]

Data looks like this(without 7 days moving), I want to create a measure that creates the 7 days moving which looks at every day and sums the past 7 days of data so I can get a smoother graph at the end. TIA!:

[AntrikshSharma]

Custom Running Total =
VAR TimeSpan = 7
VAR MaxVisibleDate =
    MAX ( Dates[Date] )
VAR ListOfDates =
    FILTER (
        ALL ( Dates ),
        Dates[Date] <= MaxVisibleDate
            && Dates[Date] > MaxVisibleDate - TimeSpan
    )
VAR Result =
    CALCULATE ( [Total Sales], ListOfDates )
RETURN
    Result

[amitchandak · Accepted solution]

@Marshy , You can have rolling 7 days avg like this

Rolling 7 day = CALCULATE(sum(Table[Number]),DATESINPERIOD('Date'[Date],MAX(Table[Date]),-7,Day))/7
or
Rolling 7 day = CALCULATE(sum(Table[Number])/distinctcount(Table[Date]),DATESINPERIOD('Date'[Date],MAX(Table[Date]),-7,Day))

[Marshy]

@amitchandak thanks but I don't fully understand. I don't want avg so assume I can just take out the divide.

what is the difference between

'Date'[Date]

 and

Table[Date]

 Thanks!