paikkatietomalleja
Paikkatietomalli (plural: paikkatietomallit) refers to formal representations of spatial phenomena used in geography, cartography, land administration, and many applied sciences. A paikkatietomalli integrates spatial geometry, topology, and attribute data to describe real‑world objects and their relationships. Core concepts include coordinate reference systems, projection methods, and data models such as vector, raster, and network representations. Vector models encode points, lines, and polygons, providing precise delineation of features; raster models represent information on a regular grid, suitable for continuous data like elevation or land cover; network models capture connectivity, commonly used for transportation or utility systems.
Paikkatietomallit support diverse applications: land use planning, environmental monitoring, disaster management, and navigation. They underpin Geographic
Examples of widely used paikkatietomallit include the Global Multi‑Resolution Terrain Elevation Data (GMTED) for digital elevation