14.7.3.10 AbstractColumnLayerGridGeometry

Description of the geometry of a column layer grid, e.g., parity and pinch, together with its supporting topology.

Column layer grid cell geometry is based upon nodes on coordinate lines.
Geometry is contained within the representation of a grid.
Point Geometry is that of the column layer coordinate line nodes. Coordinate line nodes for all of the coordinate lines, with NKL nodes per line.
The numbering of these lines follow the pillar numbering if no split coordinate lines are present.
The unsplit coordinate lines share an indexing with the pillars. The numbering of the remaining lines are defined in the columnsPerSplitCoordinateLine list-of-lists if split coordinate lines are present.
Pillar numbering is either 1D or 2D, so for unfaulted grids, the node dimensions may follow either a 2D or 3D array. Otherwise the nodes will be 2D.

In HDF5 nodes are stored as separate X, Y, Z, values, so add another dimension (size=3) which is fastest in HDF5.

Table 14.7.3.10-1 Attributes
Name	Data Type	Notes
CellGeometryIsDefined	AbstractBooleanArray	Indicator that a cell has a defined geometry. This attribute is grid metadata. If the indicator shows that the cell geometry is NOT defined, then this attribute overrides any other node geometry specification. Array index is 2D/3D.
KDirection	KDirection
NodeIsColocatedInKDirection	AbstractBooleanArray	Optional indicator that two adjacent nodes on a coordinate line are colocated. This is considered grid metadata, and is intended to over-ride any geometric comparison of node locations. Array index follows #CoordinateLines x (NKL-1).
NodeIsColocatedOnKEdge	AbstractBooleanArray	Optional indicator that two adjacent nodes on the KEDGE of a cell are colocated. This is considered grid metadata, and is intended to over-ride any geometric comparison of node locations. Array index follows #EdgesPerColumn x NKL for unstructured column layer grids and 4 x NI x NJ x NKL for IJK grids.
PillarGeometryIsDefined	AbstractBooleanArray	Indicator that a pillar has at least one node with a defined cell geometry. This is considered grid metadata. If the indicator does not indicate that the pillar geometry is defined, then this over-rides any other node geometry specification. Array index follows #Pillars and so may be either 2D or 1D.
PillarShape	PillarShape

Table 14.7.3.10-2 Relationships
Role	Class	Cardinality
SubnodeTopology	ColumnLayerSubnodeTopology	0..1
SplitCoordinateLines	ColumnLayerSplitCoordinateLines	0..1
SplitNodes	SplitNodePatch	0..1