![]() ![]() Each raster grid has a specified pixel format, the data type for each number. For most images, this value is a visible color, but other measurements are possible, even numeric codes for qualitative categories. Raster or gridded data may be the result of a gridding procedure.Ī single numeric value is then stored for each pixel. The size of each square pixel, known as the resolution or support, is constant across the grid. ![]() In digital photography, the plane is the visual field as projected onto the image sensor in computer art, the plane is a virtual canvas in geographic information systems, the plane is a projection of the Earth's surface. The fundamental strategy underlying the raster data model is the tessellation of a plane, into a two-dimensional array of squares, each called a cell or pixel (from "picture element"). ![]()
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