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The SEDRIS Data Representation Model
APPENDIX A - Classes Source |
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An instance of this DRM class specifies a description of where the environmental data originated or an intermediate collection of environmental data used during data generation. The term source is used loosely, and covers intermediate forms and final products as well as the original data sources.
A <Source> instance references raw data used to create the transmittal.
A <Source> instance references the original satellite data that has been refined for inclusion in the transmittal.
This class provides a mechanism for documenting the sources used in environmental database generation. It can also be used to document intermediate forms of the data and final products. In conjunction with <Process Step> instances, <Source> instances can be used to construct a network-like description of the database generation process, consisting of processing steps linked by their input and output data. A <Source> instance uses a <Citation> component to refer to the source data, so it has the flavor of a bibliographical reference, and can be used to refer to books, maps, presentations, or any other type of publication, as well as to digital data sets. Each <Source> instance includes a field in which the nature of the contribution of each source to the result can be described.
| SE_String | description; | 3 |
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| SE_Integer_Positive | scale; | 4 |
| SE_String | contribution; | 5 |
The description field specifies a description of the source environmental data, and is mandatory.
The scale field specifies the scale (in the map scale sense) of the source environmental data (for example, 24000 for a "1:24,000" scale).
If supplied, the contribution field states what the source environmental data contributes to the result.
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