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Helper I

## 12 Month Averaging

I have the following data where I am trying to average the previous 12 months of Value and acheive the data in column "12 Mo Avg A" where the 12 month average is calculated regardless of the date slicer. All of the rolling average codes I've found on here returns column "12 Mo Avg B" where if I filter my date for a set period of time it will calculate the previous 12 months in each cell until the number of months within the filtered range is less than 12 and averages fewer and fewer months until it hits the minimum of the date range. Basically I need the calculation for measure Avg A to continue averaging back 12 months and only the visual to be filtered. In the table below the italicized numbers is an example of a filtered date range. I also have a Date table.

 Date Value >>> 12 Mo Avg A 12 Mo Avg B 1/1/2020 23.97 2/1/2020 24.16 3/1/2020 24.27 4/1/2020 25.22 5/1/2020 24.95 6/1/2020 24.61 7/1/2020 24.56 8/1/2020 24.8 9/1/2020 24.8 10/1/2020 24.84 11/1/2020 25.01 12/1/2020 25.11 1/1/2021 25.24 2/1/2021 25.27 3/1/2021 25.33 4/1/2021 25.6 5/1/2021 25.76 6/1/2021 25.63 7/1/2021 25.82 8/1/2021 26.1 9/1/2021 26.29 10/1/2021 26.45 11/1/2021 26.49 12/1/2021 26.7 1/1/2022 27.1 2/1/2022 26.98 3/1/2022 27.1 26.34 27.10 FILTERED RANGE 4/1/2022 27.36 26.48 27.23 5/1/2022 27.48 26.63 27.31 6/1/2022 27.35 26.77 27.32 7/1/2022 27.53 26.91 27.36 8/1/2022 27.6 27.04 27.40 9/1/2022 27.86 27.17 27.47 10/1/2022 28.09 27.30 27.55 11/1/2022 28.03 27.43 27.60 12/1/2022 28.15 27.55 27.66 1/1/2023 28.49 27.67 27.73 2/1/2023 28.42 27.79 27.79 3/1/2023 28.47 27.90 27.90 4/1/2023 28.86 28.03 28.03 5/1/2023 28.68 28.13 28.13 6/1/2023 28.64 28.24 28.24 7/1/2023 28.95 28.35 28.35 8/1/2023 28.84 28.46 28.46
1 ACCEPTED SOLUTION
Community Support

HI @mcash,

I think you may need to create unconnected table as source for date filter. Then you can write measure expression to check the current date range and show the result of rolling 12 month records.

``````formula =
VAR SelectRange =
VALUE ( NewTable[Date] )
VAR currDate =
MAX ( Table[Date] )
VAR rollingAVG =
CALCULATE (
AVERAGE ( Table[Value] ),
FILTER (
ALLSELECTED ( Table ),
[Date]
>= DATE ( YEAR ( currdate ) - 1, MONTH ( currDate ), DAY ( currDate ) )
&& [Date] <= currDate
)
)
RETURN
IF ( currDate IN SelectRange, rollingAVG )``````

Regards,

Xiaoxin Sheng

Community Support Team _ Xiaoxin
If this post helps, please consider accept as solution to help other members find it more quickly.
Community Support

HI @mcash,

I think you may need to create unconnected table as source for date filter. Then you can write measure expression to check the current date range and show the result of rolling 12 month records.

``````formula =
VAR SelectRange =
VALUE ( NewTable[Date] )
VAR currDate =
MAX ( Table[Date] )
VAR rollingAVG =
CALCULATE (
AVERAGE ( Table[Value] ),
FILTER (
ALLSELECTED ( Table ),
[Date]
>= DATE ( YEAR ( currdate ) - 1, MONTH ( currDate ), DAY ( currDate ) )
&& [Date] <= currDate
)
)
RETURN
IF ( currDate IN SelectRange, rollingAVG )``````

Regards,

Xiaoxin Sheng

Community Support Team _ Xiaoxin
If this post helps, please consider accept as solution to help other members find it more quickly.