An 'If' statement which asks a yes or no question and then gives a true or false output.
Syntax
if(ConditionExpression, ThenExpression, ElseExpression)
| Parameter | Description |
|---|---|
| ConditionExpression |
A logical expression that gives a true or false output at each time step. This should be written in the form of a comparison using >, <, >=, <= and == operators. You can also use && (And) and || (Or) operators within the ConditionExpression. For example: @sensor>500 || @sensor<300 |
| ThenExpression |
The output of the If statement when the expression is true. This can be a constant value, another function, or another If statement. |
| ElseExpression |
The output of the If statement when the expression is false. This can be a constant value, another function, or another If statement. |
Example expression
if(@sensor>75, 1, 0): Gives a time series with an output of 1 when the sensor values are greater than 75 and an output of 0 when not.
if(@sensor>500 || @sensor<300, 1, 0): Gives a time series with an output of 1 when the sensor values are either greater than 500 or lower than 300 and an output of 0 when sensor values are in the range of 300 to 500.
Example chart
This chart uses the If-Then-Else function to track when the temperature sensor is over 75 (true output of 1) or not (false output of 0).
