Dynamic filter by slicer

[Jan_Trummel]

Hello to the forum,

I have a question.

1) My data

I have the Orders and Calendar tables in Power BI Desktop. Both are linked by a 1-n relationship:

My data model

In the Orders table I have the following data:

Table "Orders"

2) My report (how it should be)

I want to generate the following report:

In a slicer, the user selects a specific date. In a further slicer, he can then set how many days he would like to look into the past, starting from the selected date. (Here I use a numeric parameter.)

Here is an example:

If the user selects 04/10/2023 and wants to look 7 days into the past, then the line chart should show:

An example report

In the line chart, the days 03.04. – 04/10/2023 are displayed.
(In the example, I filtered the diagram by hand.)

Does anyone have an idea how I can implement this?

Greetings

[Jan_Trummel]

@Greg_Deckler It works great, thank you very much!

[Greg_Deckler · Accepted solution]

@Jan_Trummel Try something below. Note, assumes disconnected tables for slicers. PBIX is attached below signature.

Measure = 
    VAR __Date = MAX('Dates'[Date])
    VAR __DaysBack = [Parameter Value]
    VAR __OrderDate = MAX('Orders'[Order date])
    VAR __Result = IF(__OrderDate <= __Date && __OrderDate >= __Date - __DaysBack, SUM('Orders'[Sales]), BLANK())
RETURN
    __Result

[Jan_Trummel]

Hi, @Greg_Deckler do you think there is a solution where the Calendar table can stay connected to the Orders table?

This would be exactley what I need.