How to do a double For/While?

[Anonymous]

I have a table with the following information:

Index	Iteration	Points
1	38	19
2	39	16
3	40	13
4	41	15
5	42	16
6	43	16

I need a double while/for to create the average of the last 3 iterations to a new table: (Example) 

Index	Iteration	Average
1	40	= (19+16+13) / 3
2	41	= (16+13+15) / 3
3	42	= (13+15+16) / 3
4	43	= (15+16+16) / 3

I think recursion is not possible in Dax Code but I've tried different things to see a workaround.

Please help

[v-cazheng-msft · Accepted solution]

Hi @Anonymous,

If you would like to achieve the desired result with a DAX formula, you may try this Measure.

Avg =
VAR avg_ =
    CALCULATE (
        AVERAGE ( 'Table'[Points] ),
        FILTER (
            ALL ( 'Table' ),
            'Table'[Iteration] >= MAX ( 'Table'[Iteration] )
                && 'Table'[Iteration]
                    < ( MAX ( 'Table'[Iteration] ) + 3 )
        )
    )
VAR maxIndex =
    CALCULATE ( MAX ( 'Table'[Index] ), ALL ( 'Table' ) )
RETURN
    IF ( MAX ( 'Table'[Index] ) > maxIndex - 2, BLANK (), avg_ )

Then, the result looks like this.

If there is any post helps, then please consider Accept it as the solution to help the other members find it more quickly. If I misunderstand your needs or you still have problems on it, please let me know. Thanks a lot!

Best Regards,

Community Support Team _ Caiyun

[amitchandak]

@Anonymous ,

A new column

Var _sum = sumx(filter(Table, [Index]>= earlier([Index]) && [Index]<= earlier([Index]) +2) , [Points] )

Var _cnt = countx(filter(Table, [Index]>= earlier([Index]) && [Index]<= earlier([Index]) +2) , [Points] )

return

divide(_sum,_cnt)

If needed you can check for _cnt > 2