Value Repeating within Last 15 Days

[The_Clam]

Hi.  I have data with 3 columns...ID, AlarmName, Date Created.  I need to count how many times an AlarmName repeats within the last 15 days.  Please help.  Thanks!

Sample data:

ID	Date Created	AlarmName
28910447	6/19/2021	1024OIAP01
28732964	6/15/2021	1024OIAP01
28729174	6/15/2021	1024OIAP01
28088366	5/31/2021	1024OIAP01
27895479	5/26/2021	1024OIAP01
27864540	5/25/2021	1024OIAP01
27772164	5/23/2021	1024OIAP01
27720929	5/21/2021	1024OIAP01
27388630	5/12/2021	1024OIAP01
27228304	5/7/2021	1024OIAP01
26966512	4/28/2021	1024OIAP01
26920784	4/27/2021	1024OIAP01
26783228	4/23/2021	1024OIAP01

Expected Result:
AlarmName	Count
1024OIAP01	3

[amitchandak · Accepted solution]

@The_Clam , Please try this with help from date table

Rolling 14 = CALCULATE(count(Table[ID]),DATESINPERIOD('Date'[Date ],MAX('Date'[Date]),-14,DAY))

This will be for selected date or each date in trend 

[The_Clam]

That worked!  Thanks so much!