fill nulls with previous months averages

[Anonymous]

Hello community,

I have a problem where I want to fill future months (nulls) with the last 3 months averagrs.

here is a screenshot of my editor page for illustration:

any thoughts on how to go around this problem?

Thank you,

M

[Anonymous · Accepted solution]

Hi @Anonymous ,

Here's an example for the measure fill nulls with previous months average:

Measure = var _maxdate=MAXX(FILTER(ALLSELECTED('Table'),[Value]<>BLANK()),[Date])
var _start=EOMONTH(_maxdate,-3)
var _end=EOMONTH(_maxdate,0)
return IF(SUM('Table'[Value])=BLANK(),DIVIDE(CALCULATE(SUM('Table'[Value]),FILTER(ALLSELECTED('Table'),[Date]>_start&&[Date]<=_end)),3),SUM('Table'[Value]))

The measure is calculated based on the maximum date in the 'Table' where the 'Value' column is not blank. The formula then calculates the start and end dates of a 3-month period ending with the maximum date. If the sum of the 'Value' column is blank, the formula calculates the average of the 'Value' column for the 3-month period. Otherwise, the formula returns the sum of the 'Value' column.

Best Regards,

Stephen Tao

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[Anonymous]

Hi @Anonymous ,

Much appreciate your help here this actually worked.

One last step to make it perfect, I applied an IF statement to replace for values coming up as NULLs (future ones) while keeping actual as is.

My formula went as the following; avg_forecast = if([Measure_actual] = NULL, [Measure], [Measure_Actual]).

I was encountered with error stating 'NULL' is not supported in this context. Any input/suggestion to this?

Thank you,

MMB

[Anonymous]

Hi @Anonymous ,

Try using BLANK() instead of NULL.

avg_forecast = if([Measure_actual] = BLANK() , [Measure], [Measure_Actual]).

Best Regards,

Stephen Tao

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.           

[ppm1]

What do you plan to do with these columns once generated? Why not just calculate it with a measure so it is responsive to slicers and doesn't take up memory and/or increase refresh time?

Pat

[Anonymous]

Hi Pat,

Appreciate putting the option. I would be interested to see a DAX solution, could you provide that?

Thanks,

M

[AlienSx]

<no dax>

[Anonymous]

Could we do a measure then?