Group Statistics

The block can operate over a time-bounded window that is specified with the Window Duration parameter. If this parameter is not specified, the block uses an unbounded window. Output is generated periodically as specified by the Output Period parameter.

If a window is configured, the block uses a set of 20 buckets, so the expired value is an approximation to the nearest bucket interval.

Note: The Group Statistics block calculates and generates aggregate values for the group as a whole (not for individual devices). To generate aggregates for an individual device in a group, use the Average (Mean), Standard Deviation, or Minimum/Maximum blocks. The Group Statistics block only considers devices from which it has received input values.

Name	Description	Type	Notes
Window Duration (secs)	If present, the amount of time (in seconds) for which values are to be kept in the window. This must be a finite and positive number.	float	Optional
Output Period (secs)	The amount of time (in seconds) between each output. This must be a finite and positive number.	float	Default: 5.0

Name	Description	Type
Value	Input value for which the aggregate values are to be calculated.	float

Name	Description	Type
Minimum	The smallest input value (closest to negative infinity) across all the devices in a group.	float
Maximum	The largest input value (closest to positive infinity) across all the devices in a group.	float
Device Count	The number of devices in a group for which input values have been received so far.	float
Average	The sum of the value multiplied by how long it stays at that value divided by the total time and the device count.	float
Standard Deviation	The standard deviation of the input values across all the devices in a group.	float
Variance	The variance of the input values across all the devices in a group.	float