A bin is a data structure for grouping unstructured grid elements into a regular grid. The bin superimposes a regular grid over a structured or unstructured grid. Each element of the bin stores data about which cells within the structured or unstructured grid are contained within its boundaries. The data structure is used for such things as computing line integrals on unstructured meshes since it reduces the search time for finding what cell a particular point belong in.
scale
(float)<DataStruct cellBin>
kind = bin
onGrid = domain
scale = 2.0
</DataStruct>