Create table with relative dates from slicer

[nicksinclair01]

Hi folks,

So i want to create a table in Power BI that shows an activity count for the date selected by the user in a drop down.

The complicated piece is I then want to show in the next column the sum of the 5 days prior to that selected date and in the last column show the sum of the 20 days prior to that selected date.

For example if the user selected 21st April:

Region	Daily Count	Prior 5 Days	Prior 20 days
Europe	100	500	2000
Japan	200	1000	4000
US	300	1500	6000

My data would be in this format:

Date	Region	Count
01/04/2020	EUROPE	50
01/04/2020	US	75
01/04/2020	JAPAN	20
02/04/2020	EUROPE	30
02/04/2020	US	17
02/04/2020	JAPAN	72

and so on

ANy help would be greatly appreciated.

[v-yiruan-msft · Accepted solution]

Hi @nicksinclair01 ,

I created a sample pbix file(see attachment) for you, please check whether that is what you want.

1. Create a date dimension table

2. Create 3 measures as below to get daily count, the count for prior 5 days and the count for prior 20 days

Daily Count = CALCULATE(SUM('Table'[Count]),FILTER('Table','Table'[Date]=SELECTEDVALUE('Date'[Date])))

Prior 5 Days = CALCULATE(SUM('Table'[Count]),DATESBETWEEN('Table'[Date],SELECTEDVALUE('Date'[Date])-5,SELECTEDVALUE('Date'[Date])))

Prior 20 Days = CALCULATE(SUM('Table'[Count]),DATESBETWEEN('Table'[Date],SELECTEDVALUE('Date'[Date])-20,SELECTEDVALUE('Date'[Date])))

You can aslo refer the following video to get it.

Show Days Before Or After A Selected Date - Advanced Power BI Visual Techniques

If the above ones are not what you want, please provide your expected result with backend logic and specific examples. Thank you.

Best Regards

[amitchandak]

@nicksinclair01 , measures like

measure =
var _max = maxx(allselected('Date'), 'Date'[Date])
return
calculate(sum(Table[Value]), filter(all('Date'), 'Date'[Date] <=_max && 'Date'[Date] >= _max -5))

measure 2=
var _max = maxx(allselected('Date'), 'Date'[Date])
return
calculate(sum(Table[Value]), filter(all('Date'), 'Date'[Date] <=_max && 'Date'[Date] >= _max -20))

[nicksinclair01]

Thank you Amit,

Could you please explain how i would implement this? 

I see i would need a separate table called Date, i assume this would just contain all the inscope dates from the main table.

Does this need to be linked to the main table?

For the slicer, would this be against the main table or the dates table?