Boolean formulas allow you to specify conditions that control the calculation of a formula, for example, calculating a target time series depending on the key curve of a source time series above a certain value.

Example:

The expression if { $a<99 } { expr $a+$b } else { expr $a-$b } means:

Only if the value ($a) at a time stamp of the first source time series is smaller than 99 g/cm³, an addition with the corresponding value ($b) of the second source time series takes place. If this is not the case, a subtraction of ($a-$b) takes place.

The following standard operators and standard functions represent the most important notation types:

▪Standard operators (Boolean formulas)

▪Standard functions (Boolean formulas)