non-spatial data structure—hierarchical, networking and relationalDifferent sources of spatial and non-spatial databases Types of GIS database—spatial and non-spatial Representation of spatial features of the Earth's surface by vector and raster data structures (point, line and Polygon) Advantages ...
Open source PostGISadds spatial objects to the cross-platform PostgreSQL database. The three features that PostGIS delivers to PostgreSQL DBMS are spatial types, indexes, and functions. With support for different geometry types, the PostGIS spatial database allows querying and managing information abo...
Also, spatial data are multidimensional, spanning several different albeit correlated data, whereas nonspatial data are typically one-dimensional. GISs make an important distinction between spatial data and nonspatial data, because spatial data require extra details to be considered when implementing GIS...
Esri’s GIS software is the most powerful mapping & spatial analytics technology available. Learn about Esri’s geospatial mapping software for business and government.
the help of spatial data analysis, you can do just that: put the wealth of data at your disposal on the map to gain meaningful insights and make profitable decisions. But, in order to be able to perform such an analysis, it is important to be educated on how to work with GIS tools....
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column in a feature class. Spatial columns are defined with one of Informix Spatial DataBlade's UDTs. A spatial column can only accept data of the type required by the spatial column. For example, an ST_Polygon column rejects integers, characters, and even other types of nonpolygon geometry....
Spatially, it embraces 1163 geological map-sheets (at scale 1:200 000) in both formats of MapGIS and ArcGIS, covering 72% of China's whole territory with a total data volume of 90 GB. Its main sources is from 1:200 000 regional geological survey reports, geological maps, and mineral ...
Cartogramsdistort the shape and size of geographic areas to represent a particular data variable. For example, a high population value will enlarge the size of a polygon. Cartograms come in different styles. For example, there are density-equalizing, Dorling, and non-contiguous cartograms. No ...
Spatial data might contain additional information or nonspatial data known asattributes. An attribute is usually a piece of information that describes a feature. Spatial data can have any number of attributes about a location, such as a map, photographs, historical information and so on. ...