In GIS, a 'raster' data model differs from a 'vector' model in that raster:
Choose the correct answer
Only stores points, not areas
Uses regular grid cells for continuous spatial data; vector uses points/lines/polygons for discrete features
Cannot store elevation data
Can only be used for road networks
Correct Answer
B. Uses regular grid cells for continuous spatial data; vector uses points/lines/polygons for discrete features
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Raster: divides space into regular grid cells (pixels), each with attribute value. Good for: continuous data (DEM, satellite imagery, slope, rainfall). Resolution = cell size. Vector: represents features as points, lines, polygons with precise coordinates. Good for: discrete features (roads, buildings, boundaries). Raster: fast overlay analysis, requires more storage for fine resolution; Vector: compact, precise boundaries.
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