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Overlay in Geographic Information System (GIS) is a fundamental spatial analysis technique that involves combining two or more spatial layers to produce a new layer that contains integrated information from the input layers. This method allows geographers, planners, and decision-makers to analyze relationships, patterns, and interactions between different geographic phenomena and to generate new insights that are not possible from individual layers alone. Overlay is widely used in various applications such as land use planning, environmental management, urban development, and resource allocation. The principle of overlay in GIS is based on the idea that each layer represents a distinct theme or type of information about the same geographic area. ______ __________ _________ ___ ___ _____.
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