topic Re: Calculating average value for a day of a month 1 year ago in DAX Commands and Tips

Calculating average value for a day of a month 1 year ago

PbiCeo — Mon, 31 Aug 2020 15:32:01 GMT

Hello evryone,

I got correct average value for a day of a month with this Measure:(same value for a whole month)

Measure =

VAR tm = CALCULATE(SUM('table'[data]), FILTER(ALL('calendar'), 'calendar'date] <= 'calendar'[date]))

return

DIVIDE('tm', 'tabe'[NumberofDays], 0)

But I got worng average value for a day of a month 1 year ago with below:(not same value for a whole month)

Measure =

VAR tmly = CALCULATE(SUM('table'[data]), FILTER(ALL('calendar'), 'calendar'[date] <= 'calendar'[date]), FILTER('calendar', DATEADD('calendar'[date], -365, DAY)))

return

DIVIDE('tmly', ''tabe'[NumberofDays], 0)

How should I correct the above syntax?
Thanks in advance,

Re: Calculating average value for a day of a month 1 year ago

Greg_Deckler — Mon, 31 Aug 2020 15:20:43 GMT

PbiCeo - Perhaps this:

Measure = VAR tm = CALCULATE(SUM('table'[data]), FILTER(ALL('calendar'), 'calendar'date] <= EOMONTH('calendar'[date],-12))) return DIVIDE('tm', 'tabe'[NumberofDays], 0)

Not really enough information to go on, please first check if your issue is a common issue listed here: https://community.powerbi.com/t5/Community-Blog/Before-You-Post-Read-This/ba-p/1116882

Also, please see this post regarding How to Get Your Question Answered Quickly: https://community.powerbi.com/t5/Community-Blog/How-to-Get-Your-Question-Answered-Quickly/ba-p/38490

The most important parts are:
1. Sample data as text, use the table tool in the editing bar
2. Expected output from sample data
3. Explanation in words of how to get from 1. to 2.

Re: Calculating average value for a day of a month 1 year ago

PbiCeo — Mon, 31 Aug 2020 15:30:48 GMT

Thank you for your qucik reply Greg_Deckler ,

Now I tried the fomular you provided, but returned blank values on Table visiual.

What's wrong?

Re: Calculating average value for a day of a month 1 year ago

amitchandak — Mon, 31 Aug 2020 16:27:59 GMT

PbiCeo ,

Try like

last year MTD (complete) Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESMTD(ENDOFMONTH(dateadd('Date'[Date],-12,MONTH)))) /CALCULATE(day(eomonth(max(Sales[Sales Date]),0)),DATESMTD(ENDOFMONTH(dateadd('Date'[Date],-12,MONTH))))