An enumeration has been added to the arguments of the allocation
coefficient function, eta, to allow specification of how to allocate out
of bounds of the population balance size-groups. There are two options:
- "Clamp" will create an out-of-bounds allocation coefficient of exactly
one. This partitions unity across all size-space.
- "Extrapolate" will create an out-of-bounds allocation coefficient in
proportion to the ratio between the given size and the nearest
size-group size. This does not partition unity outside the range of
the size-groups.
The previous operation is equivalent to "Extrapolate".
It is not yet clear which method is preferable and under what
circumstances. More testing is required. The enumeration has been
created to facilitate this testing.
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