FME DESKTOP: THE TESTER
Incredibly useful transformer, the tester. Basically tests a condition to see if true or false. The output will be to one of two ports, true or false.
Very simple to use and one of the most popular transformers. Basically, take an input value and test for a condition like greater than two for example.
We can test against REGEX expressions, get matches in our attributes and send the matches out to the next transformer in the chain.
We can test for a whole range of tests, this example tests against a range between values. All values that pass will come out of the transformer to its own port.