The state_duration node

Computes the duration of a given state. The state is defined via a lambda expression.

For each consecutive point for which the lambda expression evaluates as true, the state duration will be incremented by the duration between points.

When a point evaluates as false, the state duration is reset.

The state duration will be added as an additional field to each point and it's unit is milliseconds. If the expression evaluates to false, the value will be -1.

When the lambda expression generates an error during evaluation, the point is discarded and does not affect the state duration..

Example

|state_duration(lambda: "val" < 7)

Parameters

Parameter	Description	Default
[node] lambda( lambda )	state lambda expression
as( string )	name for the added duration field	'state_duration'