Overview of Geocoding

With the development of GIS, more and more Layer Info are used to represent the real world. These Layer Info include natural elements such as rivers, mountains, etc., products of human activities such as administrative divisions, roads, buildings, pipelines, etc., and classification of Land Use types (such as grassland, woodland, agricultural land, building land, etc.). Many Layer Info are stacked together to generate a map containing a large amount of information. How to efficiently search the information you want from the massive data, which requires the use of the Match Address function, through the address code, you can achieve the Match Address query.

Geocoding is the process of translating a location description, such as a coordinate pair, an address, or a place name, into a location on the Earth's surface. When Geocoding, you can enter only one location description at a time or provide multiple descriptions. The resulting location is exported as an attributed geographic feature that can be used for mapping or Spatial Analysis operations.

Geocoding can first narrow the search scope to a specific area, then find a specific feature, and finally resolve a point on the feature to find the address. This description is then translated into X, y coordinates that can be drawn onto a map.

The SuperMap iDesktop X Geocoding is to provide basic data production for Match Address, including the production of dictionary database, Generate Address Index files, and Publish Address Index. Users can use Address Matching Service in SuperMap iServer, that is, by inputting a given Chinese keyword, they can search for the content matching with the keyword in the specified Dataset collection, and at the same time, they can get the spatial Position Info of the matching results.

Process for

Match Address

Prepare address dictionary: Address dictionary is a collection of meaningful words, which is used to divide Chinese character sequences into meaningful words.

Generate Address Index: set the address dictionary, Dataset and field participating in matching; The program will establish an index based on the contents of the fields specified in the Dataset participating in the analysis and participating in the matching, and at the same time, it will segment the contents stored in these fields into meaningful words, and this process is based on the address dictionary.

Publish Address Index: Publish the generated address index as SuperMap iServer service, and use Address Matching Service in SuperMap iServer.

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