Traditional Culture Encyclopedia - Traditional virtues - What does GIS data contain?
What does GIS data contain?
Gis spatial data includes the following aspects:
(1) Spatial, Attribute and Temporal Characteristics of Geographical Entities
(2) Abstraction of spatial data: points, lines and surfaces.
(3) Representation of spatial data: vector and raster data structures.
(4) Spatial database management system?
According to the source is divided into:
Map data
Image data:? remote sense
Topographic data:? Outline? DEM？ …
Attribute data
Metadata (metadata)
According to the representation object:
Type data
Regional data
Network data
Sampling data
Surface data
text data
Symbolic data
According to the data structure:
Vector data
raster data
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