Derived adjacencies

API

ExtendableGrids.NodePatchGroupsType
abstract type NodePatchGroups <: AbstractGridIntegerArray1D

Vector with patch groups for nodes (ensuring that node patches of nodes in same group do not overlap)

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ExtendableGrids.prepare_edges!Method
prepare_edges!(grid)

Prepare edge adjacencies (celledges, edgecells, edgenodes)

Currently depends on ExtendableSparse, we may want to remove this adjacency.

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