I have a SharePoint list of items with a column 'Employee' that indicates the employee associated with the item. It is easy to get a gallery item label to show how many entries each user has like this (although possibly ineffficient)...
CountIf(Letters,
EmployeeName.Email = ThisItem.EmployeeName.Email,
EventDate >= (Today()-SliderLookBackDays.Value)
)
I would like to filter this gallery to show only those items that have more than X number of occurrences but doing so produces the circular reference warning. I tried to use a collection with AddColumn but couldn't figure out how to iterate the list in the same way as the 'ThisItem' allows in a gallery so my Occurrence column always showed the total for the whole gallery instead of the total for that employee. Not sure if this is even the right way to go about it...
What would be the correct pattern to use to calculate the number of occurrences for each employee in a list, and then provision a view filtered to show only those above a certain number of occurrences? The list is relatively small with only a few hundred entries for an entire year.
This is what I tried in a collection but this obviously makes no sense around the "EmployeeName.Email = EmployeeName.Email" part. The code below creates the source, with an extra column "Occurrences" that has 328 in every row (the number of items in the list).
ClearCollect(colLetters,
AddColumns('Letters',
"Occurrences", CountIf(Letters, EmployeeName.Email = EmployeeName.Email, EventDate >= (Today()-SliderLookBackDays.Value))
)
) I feel like this is the right direction but I'm kind of lost as to how to construct the statement.
UPDATE:
Looking at this...may solve the problem.
https://powerusers.microsoft.com/t5/General-Discussion/Count-the-times-a-value-Appears-within-a-column-into-a/td-p/55162
UPDATE 2
OKay... I give up. There seems to be no way to reference the complex person field, in my case 'EmployeeName.DisplayName' Only plain text fields work. 
