Vector and Raster Data

Vector Data:Vector is a data structure, used to store spatial data. Vector data is comprised of lines or arcs, defined by beginning and end points, which meet at nodes. http://www.geom.unimelb.edu.au/gisweb/GISModule/GIST_Vector.htm



Raster Data: In its simplest form, a raster consists of a matrix of cells (or pixels) organized into rows and columns (or a grid) where each cell contains a value representing information, such as temperature. Rasters are digital aerial photographs, imagery from satellites, digital pictures, or even scanned maps. http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=What_is_raster_data%3F




2.5D (i.e. video games) Here's a really bad video game: http://www.youtube.com/watch?v=qItugh-fFgg

4D = Time factor (i.e. weather wap with time progression):
http://www.intellicast.com/Local/wxmap.aspx