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if - script and chart function

The if function returns a value depending on whether the condition provided with the function evaluates as True or False.

Syntax:  

if(condition , then [, else])

Some of the examples in this topic use inline loads. For more information, see Inline loads.

Arguments
Argument Description
condition Expression that is interpreted logically.
then Expression that can be of any type. If the condition is True, then the if function returns the value of the then expression.
else

Expression that can be of any type. If the condition is False, then the if function returns the value of the else expression.

This parameter is optional. If the condition is False, NULL is returned if you have not specified else.

Example
Example Result

if( Amount>= 0, 'OK', 'Alarm' )

This expression tests if the amount is a positive number (0 or larger) and return 'OK' if it is. If the amount is less than 0, 'Alarm' is returned.

Example - Load script using if

Examples - Chart expressions using if