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The SEDRIS Data Representation Model
APPENDIX A - Classes Data Table |
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An instance of a concrete class derived from this DRM class specifies an N-dimensional array of data cells, each of which has the same data signature, representing some data set. The general nature of the data set being represented is indicated by the required <Classification Data> component. The specific contents in the context of that <Classification Data> instance are given by the given <Data Table> instance's signature, that is, the combination of its ordered <Axis> and <Table Property Description> components.
The N dimensions of a <Data Table> instance are specified by its N ordered <Axis> components.
The complete structure of a cell within a <Data Table> instance is described by the complete ordered set of <Table Property Description> components of that <Data Table> instance; this set is also called the data signature, and applies to all cells of the <Data Table> instance.
Additional information about any given cell property, where such information is to be applied throughout the scope of the <Data Table> instance, such as sentinel values and tolerances, is specified by attaching <Property Characteristic> components to the applicable <Table Property Description> instance(s).
See individual subclasses for examples.
See Part 4 Volume 6, Data Tables Technical Guide, of the SEDRIS Documentation Set for detailed information on <Data Table> manipulation.
The actual cells of a <Data Table> instance are hidden by the API implementation being used to provide the <Data Table>. See the SE_PutDataTableData() function in the level 0 write API for <Data Table> production, and the level 0 function SE_GetDataTableData() for consumption.
The general nature of the data set in indicated by the required <Classification Data> component. The specific contents in the context of that <Classification Data> instance are given by the <Data Table> instance's signature, that is, the combination of its ordered <Axis> and <Table Property Description> components.
Yes; see <Property Table>.
This indicates the kind of information represented by the <Data Table>, such as terrain elevation or water characteristics.
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