POSC Specifications: Epicentre Version 3.0 | Logical Data Model |
A 1D grid defining a 1D index. Each grid specifies a) the axis points, b) whether the grid forms a loop or not, and c) the coordinates to be used to describe each grid node.
- connected (M: ndt_boolean)
- This describes the behavior where the last point in the grid is connected to the first point of the grid. If TRUE then the last point of the grid is connected to the first point (i.e., the grid connects as a loop and the first point may be reached by going past the last point). If FALSE, the first and last points are unconnected and the first point may not be directly reached from the last point. This behavior does not impact the population of a subset of the grid (e.g., if a connected 30 point grid is populated from points 5 to 20, this does NOT mean that point 20 connects to point 5).
- identifier (M, I: ndt_identifier) (C037)
- The name or identifier of this grid. Inherited from grid_or_mesh.
- description (O, I: ndt_comment) (C117)
- A remark or comment about the instance. Inherited from e_and_p_data.
- instance_create_date (O, I: ndt_date_tod) (C126)
- This is the date that this instance was created. This date is defined by the source if imported, or is the date the instance is created if a new instance. Inherited from e_and_p_data.
- instance_creator (O, I: ndt_identifier) (C126)
- This is the person, company or application that created this instance. This identifies the party responsible for loading this instance. Inherited from e_and_p_data.
- last_updated (O, I: ndt_date_tod) (C126)
- This is the date that this instance was last updated. This value should be updated when any part of this instance is altered (except for inverse relationships). Inherited from e_and_p_data.
- last_updated_by (O, I: ndt_identifier) (C126)
- This records the person or application making the update to this instance. Inherited from e_and_p_data.
- missing_element (O, I: ndt_missing_element) (C108)
- This indicates the missing elements of the structured grid. Missing elements are excluded from the grid and cannot be assigned properties. The highest order of elements allowed in the grid must be used (i.e., cells in a 3D grid). For grids composed of other grids, the behavior is cumulative with the composed grid inheriting the behavior of the component grids. For example, in seismic, a 2D binset grid may have missing elements such that the grid is "L" shaped. If a 3D grid (cube) is formed using the 2D binset grid and a 1D vertical time grid then the "columns" of the cube should be considered missing. Inherited from grid_structured.
- source (O, I: ndt_identifier) (C126)
- The provider of this instance, which is usually a data provider for imported/purchased data. If this instance is provided by POSC, then this attribute must be "POSC". Inherited from e_and_p_data.
- data_collection (I, V: SET[0:?] data_collection_content(collection_part)) (C020)
- Indicates the data collections that include this instance of E and P data. Each grid_1d may be a member of one or more data_collection_content. Inherited from e_and_p_data.
- derived_interest (I, V: SET[0:?] derived_interest_makeup(interest_for)) (C071, C122)
- These are the ownership fractions for business associates of this object. Each grid_1d may be referenced by one or more derived_interest_makeup. Inherited from object_of_interest.
- document_information_content (I, V: SET[0:?] document_information_content(e_and_p_data)) (C136)
- These are the document specification parts that include this data value and define its meaning within a document specification. Each use may define a different meaning, and many uses are allowed. Each grid_1d may be included in one or more document_information_content. Inherited from e_and_p_data.
- geophysical_processing_grid (I, V: SET[0:?] geophysical_processing_grid(node_index))
- The processing grids whose grid indexing geometry is defined by this grid. Each grid_1d may define the geometry of one or more geophysical_processing_grid. Inherited from grid_structured.
- graphical_element (I, V: SET[0:?] graphical_element(depicted_object))
- Specifies one or more graphical elements which are depicting this data item. Each grid_1d may be depicted by one or more graphical_element. Inherited from e_and_p_data.
- grid_defined_grid (I, V: SET[0:?] grid_composition(grid_structured)) (C053)
- These are the other grid systems that are constructed using this grid. Each grid_1d may be a part of one or more grid_composition. Inherited from grid_structured.
- involving_activity (I, V: SET[0:?] object_activity_involvement(involved_object)) (C056)
- This are the activity involvements which affect the object. Each grid_1d may have involvements with one or more object_activity_involvement. Inherited from object_of_interest.
- modified_by (I, V: SET[0:?] grid_modification(target_grid))
- Indicates the grid modification operations that are performed on this grid, either refinement or coarsening. Each grid_1d may have one or more grid_modification. Inherited from grid_structured.
- used_to_modify (I, V: SET[0:?] grid_modification(source_grid))
- Indicates the use of this grid in defining modifications to other grids. Each grid_1d may be used to modify one or more grid_modification. Inherited from grid_structured.
Local rules:
Supertype path(s):
Entity projects as table GRID_1D.
Referenced in Diagrams:
Generated on Tue Jul 10 15:43:12 2001
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