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Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A) : A map layer is a set of data describing a single characteristic for each location within a bounded geographic
area
Reason (R) : Only one item of information is available for each location within a single layer
In light of the above statements, choose the correct answer from the options given below.
EXPLANATION
GIS Data Architectures , Digital Elevation Mo
- Assertion (A) is True: In Geographic Information Systems (GIS), a map layer is an individual thematic spatial dataset representing a single attribute or geographic characteristic (e.g., elevation, soil type, vegetation) over a defined geographic domain.
- Reason (R) is True: The fundamental principle of topological GIS layering is that each individual thematic layer stores only one specific thematic attribute or information category per spatial location.
- Relationship: Because GIS layers are structured so that each layer represents a singular information class per coordinate, Reason (R) directly explains Assertion (A).
- Conclusion: Both (A) and (R) are true and (R) is the correct explanation of (A) (Option 1).
Correct option: (1) Both (A) and (R) are true and (R) is the correct explanation of (A)
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