Definition

COUNTX is an iterator function that counts non-blank results of an expression evaluated row by row over a table.

Formula

Count Reviews >= 5 = COUNTX('Table', IF('Table'[Review Points] >= 5, 1, BLANK()))

Use

When you need to count based on an expression that is evaluated for each row in a table.

Flowchart

Steps

1. Go to report view

2. Insert a card 

3. drag the newly created measure "CountX" from the date pane into card 

4. You will get the CountX displayed in the card