Count changes in a field (with date)

[grojnak]

Hello.

I have a table with these fields:

- employee: ID number of the worker

- location: "home" or "office"

- date: each day the employee worked

I need to count how many changes from "home" to "office" or "office" to "home" had each employee. Of course, each change should be coherent in time. For example, for one employee:

date	Location
25/09	home
26/09	office
27/09	home
28/09	home
29/09	home

the count should be 2. How can I do that? I may also need to detail only the changes. Which is the best approach? A new column with M? A new table? I discard the measure, because of that need of the detailed info of only the changes.

Thanks,

[Anonymous · Accepted solution]

Hi @grojnak ,

I suggest you to try code as below to create a measure.

My Sample:

Count Location Change For Employee =
VAR _SUMMARIZE =
    SUMMARIZE (
        ADDCOLUMNS (
            'Table',
            "CheckPoint",
                CALCULATE (
                    MIN ( 'Table'[date] ),
                    FILTER (
                        ALLEXCEPT ( 'Table', 'Table'[Employee ID] ),
                        'Table'[date] > EARLIER ( [date] )
                            && 'Table'[Location] <> EARLIER ( [Location] )
                    )
                )
        ),
        [Employee ID],
        [CheckPoint]
    )
RETURN
    COUNTX ( _SUMMARIZE, [CheckPoint] )

Result is as below.

Best Regards,

Rico Zhou

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[lbendlin]

Yes, this can easily be done in Power Query via grouping.  Read about GroupKind.Local