Data consists of observations we make from seeing the real world. Spatial data consists observations with locations. Spatial data identifies features and positions on the Earth’s surface. Spatial data is how we put our observations on the map. All GIS software has been designed to handle spatial data. Spatial data (also called geospatial data) is how geographic information is captured in a GIS. Vector and raster data are the two primary data types used in GIS. Both vector and raster data have spatial referencing systems. These are latitudes and longitudes that pinpoint positions on Earth. We know the two main spatial data models are vector and raster data. But what is the difference between raster and vector data? When should data be displayed as a raster or vector? Let’s explore spatial data types in more detail: Vector Spatial Data Types World Capital Cities Vector data is not made up of a grid of pixels. Instead, vector graphics are comprised of vertices and paths. The three basic symbol types for vector data are points, lines and polygons (areas). Since the dawn of time, maps have been using symbols to represent real-world features. In GIS terminology, real-world features are called spatial entities. [...]
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The post GIS Spatial Data Types: Vector vs Raster appeared first on GIS Geography.
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