Ok, so this one has me stumped.
Client has a report that shows the record count of a user's name in a custom field. They'd like to only see those users with a record count of 4 or more and still see that user's total number of records. On a graph, if possible.
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If this were SQL, what you're after is a "TOP" function...but alas, it is not available (yet).
So as a hack...
Depending on where that user's name count is coming from, if you can persist it as custom data (e.g. in a calculated parameter), you could then filter on it (e.g. >4), and sort on it (e.g. descending on that count), and chart it.