Problems charting cumulative counts

[jonno83]

Hi folks

I am struggling in my presentation of a cumulative count using a stacked area chart and would appreciate any help you can provide.

I have a measure which is calculating the desired output correctly (well at least until I chart it):

CumulativeClients = VAR __LAST_DATE = LASTDATE(ClientsDateKey[Date].[Date]) RETURN IF (__LAST_DATE > DATE(YEAR(TODAY()),MONTH(TODAY()),1)-1, BLANK(), CALCULATE(COUNT(Clients[EnvironmentClientLocation]),Filter(ALLSELECTED(ClientsDateKey),ClientsDateKey[Date] <= max(ClientsDateKey[Date]))))

When charted, as far as I can tell, a point is plotted only when the cumulative count changes. If there is no change from one month to the next, no point is plotted. When using a stacked chart, this gives some very odd results, see the screenshot below for a good example.

Does anyone know of a way to get around this issue?

Many thanks

Jon

[amitchandak]

You can get cumulative like

YTD Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESYTD(('Date'[Date]),"12/31")) // yearly

Cumm Sales = CALCULATE(SUM(Sales[Sales Amount]),filter(date,date[date] <=maxx(date,date[date]))) //Over all

Use a date table.

Sort seems to be an issue. Create month year sort column and mark it as the sort column

Month year sort = Format([Date],"YYYYMM")

To get the best of the time intelligence function. Make sure you have a date calendar and it has been marked as the date in model view. Also, join it with the date column of your fact/s. Refer :
https://radacad.com/creating-calendar-table-in-power-bi-using-dax-functions
https://www.archerpoint.com/blog/Posts/creating-date-table-power-bi
https://www.sqlbi.com/articles/creating-a-simple-date-table-in-dax/

[jonno83]

Hi @amitchandak. Thanks for your response. I've already got a date table in my data model and refer to it in this case, as I said, I'm happy with the calculations and the numbers produced by my cumulative count.

I've followed your steps but this has resolved my charting issue. Generally I was expecting any resolution to this to be on the charting side, or else a manipulation of the calculation (I had thought about updating the measure to add a tiny amount like 0.000001 for each step, but hoped there was a purer approach).

Thanks again

Jon