By incorporating control operators into your FLOW analytics, you are literally turning data into actions. Let's find out how to leverage this powerful class of operators!

The volume operator counts the number of trajectories on its input. If this count matches the defined condition, all the trajectories are passed to the operator output. Otherwise no trajectories are passed by the operator. You can see a simple example below:

You simply drag and drop the operator into the right place in your analytics and connect is as usual.

Setting up the operator condition is very straightforward. The condition can be either applied to all the trajectories in cached history or only the trajectories that are detected at the input right now - in this case, select the "Now" time mode. Imagine counting the number of pedestrians waiting to cross the street right now.

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