Looking for a PowerBI Dax solution - rolling cumulative transaction based, not time

[dacoil]

Hey looking for a way to sum a column by limiting the sum (of Flags) to the current and previous 3 rows.  These events have date time stamps, but the time delta between the transactions is not exact to do a rolling cumulative by a datesbetwen function.  And specifically we only want the past 4 transactions to be counted.

DTS   Value   Flag   RollingFlagCount

12:21  5.5         1               1

12:22  6.0         0               1

12:30  6.2         1               2

12:33  6.3         1               3

12:35  3            0               2

[v-shex-msft · Accepted solution]

Hi @dacoil,

You can use below formula to get the grouping rolling count.

Sample measure:

RollingCount = COUNTX(FILTER(ALL(test),[DTS]<=MAX(test[DTS])&&[Flag]=MAX(test[Flag])),[Flag])

Regards,

Xiaoxin Sheng