With the development of geographic information systems, an increasing number of layer info is being used to represent the real world. These layer info include naturally occurring features like rivers and mountain peaks, human-made elements such as administrative divisions, roads, buildings, and pipelines, as well as land use classifications (e.g., grasslands, woodlands, agricultural land, construction land). When multiple layer info are superimposed, they generate maps containing massive information. To efficiently search for desired information from this vast data, the address matching function is essential. Through geocoding, address matching queries can be realized.
Geocoding refers to the process of converting location descriptions like coordinate pairs, addresses, or place names into specific positions on the Earth's surface. During geocoding, you may input either a single location description or multiple descriptions at once. The resulting locations will be output as attributed geographic features that can be used for mapping or spatial analysis operations.
Similar to narrowing a search to a specific region, identifying particular features, and resolving a point on those features to locate an address, geocoding first obtains a text description of a location and then converts it into x,y coordinates that can be plotted on a map.
SuperMap iDesktopX geocoding provides foundational data preparation for address matching, including creating dictionary libraries, generating address index files, and publishing address indexes. This enables users to utilize the address matching service in SuperMap iServer, where Chinese keywords can be input to search matching content within specified datasource collections while obtaining spatial position info of the matches.
Address Matching Workflow
- Prepare Address Dictionary: The address dictionary is a collection of meaningful terms used to segment Chinese character sequences into meaningful words.
- Generate Address Index: By configuring participating address dictionaries, datasets, and matching fields, the program builds indexes based on specified fields in the datasets. It performs word segmentation using the address dictionary to split field contents into meaningful terms.
- Publish Address Index: Publish the generated address index as a SuperMap iServer service to enable address matching functionality in SuperMap iServer.
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