To infer many interesting associations among locations: Which cellsĪre upstream from other cells? Which locations are visible from a The fact that locations are arranged regularly permits the raster GIS In a DEM, each cell has a value corresponding to its elevation. Raster GIS represents the world as a regular arrangement of locations. Some things you can do with digital elevation modelsĭigital Elevation Models (DEMs) are a type of raster GIS layer. Transforming these raster terrain models into: synthetic shaded relief images Ĭontours for laser cutting surfaces for 3d visualization, and editableīreaklines that serve as the basis of earthwork and grading studies. Georeferenced terrain data for nearly anywhere in the world and georeferencdĪerial photography within the United States. Terrain data is surprisingly easy to obtainĪnd convert into useful representations that may be used in GIS and also Place-Based design projects benefit from an understanding and representation Site Modeling in Context Obtaining And Transforming Elevation Data
