GIS DictionaryBrowse dictionary # A B C D E F G H I J K L M N O P Q R S T U V W X Y Zvector data Share URL [modeling] Data in point, line, or area (polygon) format. See also line point polygon
Vector data is a representation of the world using points, lines, and polygons. This data is created by digitizing the base data, and it stores information in x, y coordinates. Vector data is one of two primary types of spatial data in geographic information systems (GIS) – the other ...
this paper focuses on novel approaches to the definition of small objects and the establishment of scale sequence.The ease of implementation and efficacy of the solutions proposed are exemplified and analyzed.Possibilities for further research into the multiscalar display of vector data in GIS are ...
GIS Data Models The real world can only be depicted in a GIS through the use of models that define phenomena in a manner that computer systems can interpret, as well perform meaningful analysis There are two significant model categories at present: Graphic Models: Vector and Raster Database Mod...
Synonyms Geometric modeling; Vector graphics Definition Spatial data is data related to alocation. Some examples include the population of acity, the type of soil in aregion, and data from remote‐sensing satellites. In the first example, the city could be considered as alocation and the popula...
Figure 3.2.A map illustrating vector GIS databases for roads, streams, homesites, timber stands, and hiking trails. View chapterExplore book Spatial Data S.C.Guptill, inInternational Encyclopedia of the Social & Behavioral Sciences, 2001
Define Vector image. Vector image synonyms, Vector image pronunciation, Vector image translation, English dictionary definition of Vector image. n. a method of electronically coding graphic images so that they are represented in lines rather than fixed b
Vector data can also be stored in relational databases, which allows for multiuser access as well as various types of indexing. Two of the most common options for this are spatial extensions built for widely used database systems. The PostGIS extension runs on top of PostgreSQL, and SpatiaLite...
datavalueinformation–Numberofrows,numberofcolumn–Cellsizes(XandY)–Top,left,bottomandrightcoordinates•Gridvalues–Real(floatingdecimalpoint)–Integer(mayhaveassociatedattributetable)DefinitionofaGridNumberofrowsNumberofColumns(X,Y)CellsizeNODATAcellPointsasCellsLineasaSequenceofCellsPolygonasaZoneofCellsNODATA...
Multi-scale representation of spatial data is a research focus in GIS, while building multi-scale data model is a key to implementing multi-scale representation of vector data. In view of the shortcomings of existing multi-scale data model in geographical cognition and special analysis, this paper...