![]() This is in contrast to a vector model that may or may not have a value associated with the geometric primitive.Īlso note that a raster data structure is square or rectangular. Implicit in a raster data model is a value associated with each cell or pixel. But a regularly spaced array of marked points may be a better analogy since rasters are stored as an array of values where each cell is defined by a single coordinate pair inside of most GIS environments. Raster datasets are commonly used for representing and managing imagery, surface temperatures, digital elevation models, and numerous other entities.Ī raster can be thought of as a special case of an area object where the area is divided into a regular grid of cells.
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