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emildeak's avatar
emildeak
Regular Visitor
3 years ago
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Grouped by week - determine change

Hi,   i have a problem where i stuck since several days, maybe you can help me.   I have a table with 2 columns, day and value. I'd like to get the value grouped bei a week Starting on Monday. A...
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  • v-jianboli-msft's avatar
    v-jianboli-msft
    3 years ago

    Hi emildeak ,

     

    Based on your description, I have created a simple sample:

    Please try:

    Week Avg = 
var _a = WEEKDAY(MAX('Table'[Day]),2)
var _b = CALCULATE(AVERAGE('Table'[Value]),FILTER(ALL('Table'),WEEKNUM([Day],2)=WEEKNUM(MAX('Table'[Day]),2)))
return IF(_a=7,_b)

Weekly Change = 
var _a = WEEKDAY(MAX('Table'[Day]),2)
var _b = CALCULATE(SUM('Table'[Value]),FILTER(ALL('Table'),WEEKNUM([Day],2)=WEEKNUM(MAX('Table'[Day]),2)))// the value of current week
var _c = CALCULATE(SUM('Table'[Value]),FILTER(ALL('Table'),WEEKNUM([Day],2)=WEEKNUM(MAX('Table'[Day]),2)-1))// the value of previous week
var _d = DIVIDE(_c,_b)
return IF(_a=7,_d)

    Output:

    Since I'm not sure what your weekly change is based on, I calculated the percentage change in their total weekly value. You can change the aggregation in the measure to get the value you want, or clarify your calculation logic to me.

     

    Best Regards,

    Jianbo Li

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

amitchandak's avatar
amitchandak
Icon for Super User rankSuper User
3 years ago

emildeak , one of the ways is to have week rank on the year week column, in separate week/date table

 

new column

 

Week Rank RANKX(all('Date'),'Date'[Year Week],,ASC,Dense) //YYYYWW format

 

This Week = CALCULATE(Average('Table'[Value]), FILTER(ALL('Date'),'Date'[Week Rank]=max('Date'[Week Rank])))
Last Week = CALCULATE(Average('Table'[Value]), FILTER(ALL('Date'),'Date'[Week Rank]=max('Date'[Week Rank])-1))