Advantages: the data structure is compact, the redundancy is low, it is beneficial to network and retrieval analysis, and the graphic display quality is good and the precision is high.

Disadvantages: the data structure is complex and the analysis of polygon overlay is difficult.

Advantages and disadvantages of raster data:

Advantages: simple data structure, convenient for spatial analysis and surface simulation, and strong actuality; It is convenient for spatial data to be superimposed and combined, for all kinds of spatial analysis and for mathematical simulation.

Disadvantages: large amount of data and complicated projection conversion.

Related content explanation:

Vector data mainly refers to the large-scale topographic map of the city. In this system, each layer is mainly divided into bottom layer, road layer and unit layer. Reasonable layering facilitates the overlapping analysis and seamless splicing of graphics, and realizes the large-scale roaming of system graphics. Vector data generally represents the spatial position of geographical entities as accurately as possible by recording coordinates, and the displayed graphics are generally divided into vector maps and bitmaps.

Vector data is a data organization method that uses points, lines, surfaces and their combinations in Euclidean geometry to represent the spatial distribution of geographical entities. Vector data structure is divided into simple data structure (noodle data structure is the most typical), topological data structure (arc segment is the basic object of data organization, and the most important technical feature and contribution is topological editing function P39) and curved surface data structure.