More complicated Repeat Customer Pattern

[Mandy22]

I'll give an example of what I'm trying to acheive, with some background:

The data I pull is from 1/1/19 to current day. 

I'd like to see our repeat/return customers each month. I plan to display these in a monthly line graph and potentially a daily line graph using order_date as the x axis.

Example: When I click on January 19 in the graph, someone can qualify to be a repeat customer if she ordered a service on the 19th and on the 1st. When I click on the graph on January 1 in the graph, she should not appear--she had only booked one job at that point in time, so she was not a repeat customer at that time.

Does anyone know how to do this, or can point me in a good direction? I've only been using BI for 3 months.

[Anonymous · Accepted solution]

If you have a data model that looks similar to this:

Then you can get the following output:

Using this type of calculation:

Repeat Customer Count = 
CALCULATE (
    COUNTROWS ( 'Customer' ),
    FILTER (
        'Customer',
        CALCULATE (
            COUNTROWS ( VALUES ( 'Data'[Date] ) ),
            FILTER ( ALL ( 'Date'), 'Date'[Date] <= MAX ( 'Date'[Date] ) )
        ) > 1
        && CALCULATE(COUNTROWS('Data')) >= 1
    )
)

I have uploaded a sample workbook here: Sample Workbook

[Mandy22]

Thank you for your solution--it worked!