Quick Measure: Rolling Average per year Help!

[avcr29]

Hello!,

I need help, i'm using quick measure rolling average and it's calculating correctly but i want to use Year filter, i don't want it to calculate the rolling average taking the average from the prior year, i want it to start the measure for year, so when i calculate it, the result should be like this: 

year	month	x measure	x rolling average
2017	Jan	71%	71%
2017	Feb	64%	68%
2017	Mar	72%	69%
2017	Apr	72%	70%
2017	May	77%	71%
2017	Jun	75%	72%
2017	Jul	73%	72%
2017	Aug	76%	73%
2017	Sep	68%	72%
2017	Oct	66%	72%
2017	Nov	66%	71%
2017	Dic	66%	71%
2018	Jan	59%	59%

As you can see in 2018 the rolling average should start calculating without taking in consideration the accumulated of 2017, every year should be like this.

The quick measure dax formula is:

x rolling average =

IF(
ISFILTERED('NPS'[Fecha]),
ERROR("Time intelligence quick measures can only be grouped or filtered by the Power BI-provided date hierarchy or primary date column."),
VAR __LAST_DATE = ENDOFMONTH('NPS'[Fecha].[Date])
VAR __DATE_PERIOD =
DATESBETWEEN(
'NPS'[Fecha].[Date],
STARTOFMONTH(DATEADD(__LAST_DATE, -COUNTA(NPS[Fecha]), MONTH)),
__LAST_DATE
)
RETURN
AVERAGEX(
CALCULATETABLE(
SUMMARIZE(
VALUES('NPS'),
'NPS'[Fecha].[Year],
'NPS'[Fecha].[QuarterNo],
'NPS'[Fecha].[Quarter],
'NPS'[Fecha].[MonthNo],
'NPS'[Fecha].[Month]
),
__DATE_PERIOD
),
CALCULATE([x], ALL('NPS'[Fecha].[Day]))
)
)

i don't know exactly what should i change in the formula or if there's another way.

Thanks

[Phil_Seamark · Accepted solution]

Hi @avcr29

What happens if you try this

x rolling average = 

IF(
    ISFILTERED('NPS'[Fecha]),
        ERROR("Time intelligence quick measures can only be grouped or filtered by the Power BI-provided date hierarchy or primary date column."),
VAR __LAST_DATE = ENDOFMONTH('NPS'[Fecha].[Date])
VAR __DATE_PERIOD =
    FILTER(
        DATESBETWEEN(
            'NPS'[Fecha].[Date],
            STARTOFMONTH(DATEADD(__LAST_DATE, -COUNTA(NPS[Fecha]), MONTH)),
            __LAST_DATE
            ),YEAR(__LAST_DATE) = YEAR( 'NPS'[Fecha].[Date]))
RETURN
AVERAGEX(
CALCULATETABLE(
SUMMARIZE(
VALUES('NPS'),
'NPS'[Fecha].[Year],
'NPS'[Fecha].[QuarterNo],
'NPS'[Fecha].[Quarter],
'NPS'[Fecha].[MonthNo],
'NPS'[Fecha].[Month]
),
__DATE_PERIOD
),
CALCULATE([x], ALL('NPS'[Fecha].[Day]))
)
)

[avcr29]

Thank you so much @Phil_Seamark, it works! that's what i was looking for.