The LastKnown Heater returns the last value available for a field, ignoring empty cells.
LastKnown Heater - ExampleFor example, the LastKnown Heater is useful for obtaining the group when the group value is only supplied at the start of the group. In this case the LastKnown Heater would automatically fill in the missing values in the group column for output.
Please also refer to the general information on the use of Heaters (functions)
