When you have chosen to allow waste during the grade compositing and have selected an EXPAND processing method, the following options are available:
Prioritise on Minimum Length
Select this option to minimise dilution. With this option set, expansion is stopped if:
- The composite length is greater than or equal to the Minimum Length and,
- The grade of the next record to be added is less than the trigger value.
By default, the composite will be based on minimum grade. This will maximise length. When directed to expand up or down, or auto, the function will test if it can include waste intervals adjacent to grade composites.
If the value of the current composite is above the trigger value, the algorithm will try to add another adjacent interval according to the direction setting. It will continue doing this until the composite cannot be expanded any further without violating the trigger value.
Additional constraints are:
- The values in Maximum total length of waste and Maximum consecutive length of waste.
Join neighbouring composites if able
(Advanced Grade Compositing only) After expanding the composites, especially with the Prioritise on Minimum Length option set, there is a chance that the resulting composites will lie next to each other, i.e. the end of one composite will be the start of the next composite.
Select this option to combine these neighbouring composites into a single composite, provided that the compositing rules are not broken in doing so.
See Also