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S3's avatar
S3
Helper III
3 years ago
Solved

PreviousDay for First Date in Dataset

Hello,  I have a dataset which begins on the 01st of January 2022 and ends on the 31st of July 2022.  I also have a date slicer the user can choose from and a graph showing the value of previo...
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  • v-yalanwu-msft's avatar
    v-yalanwu-msft
    3 years ago

    Hi, S3 ;

    Try it.

    Previous Period Value = 
var _a= CALCULATE([Value Measure]
	                             ,DATESBETWEEN(
									 Dates[Date],
									 [Start of Previous Period],
				    				 [End of Previous Period]),
									 ALL(Dates))
var _diff2=DATEDIFF( CALCULATE(MIN('Dates'[Date]),ALLSELECTED(Dates)),CALCULATE(MAX('Dates'[Date]),ALLSELECTED(Dates)),DAY)
var _diff1=DATEDIFF( CALCULATE(MIN('Dates'[Date]),ALL(Dates)),CALCULATE(MIN('Dates'[Date]),ALLSELECTED(Dates)),DAY)
return IF(CALCULATE(SUM('Table'[value]),ALL('Table'))=_a||_diff1<_diff2,BLANK(), _a)

    The final show:


    Best Regards,
    Community Support Team _ Yalan Wu
    If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

S3's avatar
S3
Helper III
3 years ago


here's a link to the sample data:

https://drive.google.com/file/d/1NKjo6Jp3-ZexOr8-pbstcmQuwjDNfu8l/view?usp=sharing


When one filters the dates between 01.01.2022 and 31.01.2022, it still shows a difference between this period and previous period, even though there's no previous period, and I would like it to show N/A or 0

The Previous Period Value is used only to calculate the Difference, if there's a way to show the real value of the previous period, that would also be very good. 

Thanks so much for replying.