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Question
Urban change detection is effectively undertaken in GIS core using:
Options
Overlay operations
Proximity analysis
Network analysis
Buffering
MCQ
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Solution
Overlay operations
Explanation:
Overlay operations in GIS are used to superimpose multiple layers of spatial data from different time periods to identify relationships and patterns of change between them. For example, overlaying urban land use maps from 1974 and 2001 clearly depicts urban sprawl and other changes over that time period. This method is fundamental to land use/land cover change detection and environmental monitoring.
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Sequences of GIS Activities
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RELATED QUESTIONS
What is an overlay analysis?
Write an explanatory account of the sequence of activities involved in GIS related work.
Make correct pairs of the following two columns and select the correct option.
| Period | Approach |
| 1. Early colonial period | (a) Exploration and Description |
| 2. Late 1950’s to the late 1960’s | (b) Regional Analysis |
| 3. Later colonial period | (c) Aerial Differentiation |
| 4. 1930’s through the inter-war period | (d) Spatial Organization |
