Difference from previous cel (Additional consultation)

[owlet0214]

Hello,

It is related to a question I previously asked.

https://community.powerbi.com/t5/Desktop/Difference-from-previous-cell/m-p/1091974

I am unable to solve the following problems.

I am counting the difference of the counts the day before (DAX_diff2).

However, the number of counts is sometimes revised and may be negative compared to the previous day.

Then I can't calculate well.

In the example below, the calculation is not "difference between a certain day and the day before that day" but "difference between a certain day and the maximum value up to the previous day".

I want to set the value of "max_test1" to "249,619" when the value of "Dax_Last_date" is 5/20.

The formula I'm using is:

DAX_Last date = maxx(filter('Table',[Country/Region]=earlier([Country/Region]) && [YYYYMMDD] <earlier([YYYYMMDD])),[YYYYMMDD])

DAX_diff2（case_a_day） = [count_cum] - maxx(filter('Table',[Country/Region]=earlier([Country/Region]) && [DAX_Last date] <earlier([DAX_Last date])),[count_cum])

maxx_test1 = maxx(filter('Table',[Country/Region]=earlier([Country/Region]) && [DAX_Last date] <earlier([DAX_Last date])),[count_cum])

Please help.

[az38 · Accepted solution]

Hi @owlet0214 

your max_test returns the MAX value for all previous period.

you need smth like

maxx_test1 = 
var _maxDate = maxx(filter('Table',[Country/Region]=earlier([Country/Region]) && [DAX_Last date] <earlier([DAX_Last date])),[DAX_Last date])

RETURN

maxx(filter('Table',[Country/Region]=earlier([Country/Region]) && [DAX_Last date] = _maxDate),[count_cum])

[owlet0214]

Finally it worked!

Thank you!

[owlet0214]

Thank you very much.

I have a meeting so I will try it later.