Specification for Geodata Sample Clauses

Specification for Geodata. This section is about Geospatial data (in short: geodata) and how they are represented in DIP format. Geodata is a combination of the graphical representation of objects in space and their descriptions or attributes. Additionally, geospatial formats include geospatially focused datasets or databases that contain primary information about a geographic location. Furthermore, ancillary and supplementary data – that can be either included or derived using spatial analysis – are considered necessary for rendering, interpretation and re-use of the data. The basis of geodata is generally either vector or raster graphics data which can be stored as a set of files or as a database (if the database supports spatial data types). Vector data represents spatial objects as points, lines or polygons, or a complex combination of them. Descriptive or derived attributes can be stored along with the spatial data in tables (one row per spatial object) or as a separate table. Raster data represents spatial objects as cells in a grid. Those cells can contain different types of values from binary to decimal numbers. Raster data is often split into a number of images covering a larger area. Some geodata is structured in a form that it is self-explanatory. In other cases, especially if geodata was a part of a greater system, we need additional information to properly render it in the way it was used in the original system. For proper interpretation of geodata we also need some other elements that put the coordinates and attribute tables into context. The main additional elements are: Spatial referencing information (Coordinate system); geoprocessing information; and visualization.