Sum for next row based on condition

[tranguyen]

Hi everyone. I am a fresher in Power BI. Please help to look at 2 pictures below.
- Week wash is a column

- Rank is a column that was created by week wash and month
- Distinctcustomerbycategory is a measure. It will count the number of days of each week except Sunday.

With the first picture below. I want to have a condition, If Distinctcustomerbycategory <=2, It will always plus for the next row with Rank = 2. After the value of Distinctcustomerbycategory will return Blank. If It doesn't have any value <= 2. Keep staying all value

  

The result I want.
Week wash       Rank               Distinctcustomerbycategory
March 2               1                                       Blank
March 9               2                                          8 (2+6)

March 16             3                                          6 

March 23             4                                          6                                              

March 30             5                                          6

With the seconde picture below.  If Distinctcustomerbycategory <=2.  It will always plus for the next row with Rank = 1 of next month ( first week of May month). After plus the value of Distinctcustomerbycategory will return Blank. If It doesn't have any value <= 2. Keep stay all value.

Week wash       Rank               Distinctcustomerbycategory
April 6                  1                                          6
April  13               2                                          6

April 20                3                                          5 

April 27                4                                          5                                              

April 30                5                                        Blank
May 5                   1                                         6 (2+4)

Thanks for helping 

[Anonymous]

Hi @tranguyen ,

I made simple samples and you can check the results below:

Measure = var _v = MAX('Table'[Value])
var _pre = ADDCOLUMNS('Table',"pre",SUMX(FILTER(ALL('Table'),[Rank]=EARLIER('Table'[Rank])-1),[Value]))
RETURN IF(_v<=2,"blank",IF(SUMX(_pre,[pre])<=2,_v+SUMX(_pre,[pre]),_v))

An attachment for your reference. Hope it helps!

Best regards,
Community Support Team_ Scott Chang

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

[tranguyen]

Thanks for helping. But Value in this case is a measure, When I used max([Value]) It showed:
- The MAX function only accepts a column reference as the argument number 1.

[Anonymous · Accepted solution]

Hi @tranguyen ,

Try below:

_Value = MAX('Table'[Value]) 

Measure = var _v = [_Value]
var _pre = ADDCOLUMNS('Table',"pre",SUMX(FILTER(ALL('Table'),[Rank]=EARLIER('Table'[Rank])-1),[_Value]))
RETURN IF(_v<=2,"blank",IF(SUMX(_pre,[pre])<=2,_v+SUMX(_pre,[pre]),_v))

Hope it helps!

Best regards,
Community Support Team_ Scott Chang

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

[amitchandak]

@tranguyen , use new table levels calculation , previous should help in this case

🚀 Power BI Update: Visual calculations (preview)🚀
https://powerbi.microsoft.com/en-us/blog/visual-calculations-preview/

[tranguyen]

After updating a new Power BI. What should I do now to solve my problems?

[tranguyen]

Do you have any way to solve this besides updating visual calculations or this is the only way to solve it?