The Value Widget displays a single numerical value calculated from the trajectories selected by the operator it is attached to. This widget provides quick and clear insight into key metrics, offering a simple way to monitor specific aspects of the analyzed data.
Available Attributes
The Value Widget supports the following attributes:
Object count, representing the number of trajectories selected by the operator.
Occupancy, showing the total time (in seconds) a zone is occupied by at least one object within a selected time interval. Supported time modes include Whole history, Offset, and Time blocks.
The Occupancy attribute is available starting from FLOW version 1.18.
Example of Occupancy Calculation
Consider a scenario where three vehicles (A, B, and C) are detected within a monitored zone during the selected time interval. The Occupancy value represents the total time during which at least one of these vehicles is present in the zone, regardless of how many vehicles are there at the same time.
In the example above, the occupancy value for the zone at the 00:30 timestamp is 20 seconds. This is because the zone remained unoccupied for the first 10 seconds, and was then continuously occupied by vehicles A and B for the subsequent 20 seconds. The following 30 second time block shows 30 because the zone is fully occupied by at least one of the vehicles.
Superwidgets
Value Widgets can be grouped together to create Superwidgets, allowing you to visualize multiple values in a single pie chart. To group widgets, simply use drag-and-drop on the Dashboard. For details and examples, refer to the article Superwidgets.
What Next?
Learn more about widgets and sinks in FLOW, explore time processing, or check out other widget types such as Distribution and Movement Set Statistics. Use the FLOW Public API to access data from widgets and sinks and integrate it with your external systems.
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