Every Sunday INV value

[tulasi_pbi1988]

Hi,

I need to calculate Weeks of Inventory. Which logic is (last Sunday value)/avg(last 4 Sunday's value)

Could you please help me to get last Sunday's value? My data is the date-level granularity and I need to consider only every Sunday values.

as in the below image, I need to calculate (189118738- last Sunday)/avg(last 4 Sundays value highlighted)

[amitchandak]

@tulasi_pbi1988 , The way I will approch, Create Date table, Create sunday week start date

Week Start date = 'Date'[Date]+-1*WEEKDAY('Date'[Date],1)+1
Week End date = 'Date'[Date]+ 7-1*WEEKDAY('Date'[Date],1)

Create Rank on week start date

Week Rank = RANKX(all('Date'),'Date'[Week Start date],,ASC,Dense)

Last Sunday Week =CALCULATE(sum('order'[Qty]), FILTER(ALL('Date'),'Date'[Week Rank]=max('Date'[Week Rank]) && 'Date'[Date] = 'Date'[Week Start date]))

Last 4 week =
CALCULATE(sum('order'[Qty]), FILTER(ALL('Date'),'Date'[Week Rank]>=max('Date'[Week Rank])-5 && 'Date'[Week Rank]<=max('Date'[Week Rank])-1 && 'Date'[Date] = 'Date'[Week Start date]))

Power BI — Week on Week and WTD
https://medium.com/@amitchandak.1978/power-bi-wtd-questions-time-intelligence-4-5-98c30fab69d3
https://community.powerbi.com/t5/Community-Blog/Week-Is-Not-So-Weak-WTD-Last-WTD-and-This-Week-vs-La...
https://www.youtube.com/watch?v=pnAesWxYgJ8