Average Distincts per TimeStamp

[Anonymous]

Hello all.

I'm quite new with Power BI and I'm facing a problem while I try to create a measure.

I have a table with events, its time stamps and the machine with the problem identified with a serial number.

I wish to know the average of distinct SN per day in a time frame. I know that it is easy to do with a chart, but I need the value as a measure for next calculations.

I show you an example below:

Here are my data. And I want to obtain:

In Excel, the path I follow is the next:

SUM(  COUNTIFS ( LISTOFDAYS = DAY && LIST_OF_SN = SN1 ) + COUNTIFS ( LISTOFDAYS = DAY && LIST_OF_SN = SN2 ) + .... + COUNTIFS ( LISTOFDAYS = DAY && LIST_OF_SN = SNn )

This option isn't good neither in Excel nor, of course, in Power BI.

What I've tried?

Create a new table with one column where are the days.

Distinct counts of SN from original table.

And now, with the help of and slicer I want to use both tables in the same page filtering by SN and by date, but I have issues when I link the tables. I've used a link Many to One form original table (same day due to events in different rows) to the new table (one different day per row). Then, when I use the slicer to select the time frame is all ok, but doesn't apply the SN filter also I have.

How can I do that?

[v-ljerr-msft · Accepted solution]

Hi @Anonymous,

According to your description, I have made a sample for your reference.

I assume you have a table called "Table1" like below.

Then you should be able to use the formula below to create a measure to calculate the average of distinct SN per day in a time frame.

AvgCountPerDay = 
AVERAGEX (
    SUMMARIZE (
        Table1,
        Table1[Time],
        "DistinctCountOfSN", DISTINCTCOUNT ( Table1[SN] )
    ),
    [DistinctCountOfSN]
)

Here is the sample pbix file for your reference.

Regards

[Anonymous]

Works fine! Many thanks for your time! 😉