3. Integrated analysis of spatial and attribute data - RTC, Regional ...
3. Integrated analysis of spatial and attribute data - RTC, Regional ...
3. Integrated analysis of spatial and attribute data - RTC, Regional ...
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Raster Data ModelIn the raster <strong>data</strong> model, l<strong>and</strong> cover is represented by a regular grid <strong>of</strong> aquareEach cell will have a value corresponding to its l<strong>and</strong> cover type.Raster <strong>data</strong> are good at:‣representing continuous <strong>data</strong> (e.g., slope, elevation, chemicalconcentrations)‣representing multiple feature types (e.g., points, lines, <strong>and</strong> polygons) assingle feature types (cells)‣rapid computations ("map algebra") in which raster layers are treated aselements in mathematical expressions‣<strong>analysis</strong> <strong>of</strong> multi-layer or multivariate <strong>data</strong> (e.g., satellite image processing<strong>and</strong> <strong>analysis</strong>)‣hogging disk space30