Geospatial Data Parsing And Aggregation Methods Oriented To "Mapworld Of Changzhou"

Mapworld, to be the public version of national public service platform of geographic information, was constructed by the National Administration of Surveying, Mapping and Geographic Information, which aim to offer better service for public with the achievement of national geographic data. However, the data achievement of Mapworld mainly derived from basic surveying and mapping, including electronic map, digital orthophoto map, digital elevation model and other data products. Although it could meet the basic needs of browse map and find the travel route to some extent, but also far from the specific requirements for public service and industry application, so it could not make users to enjoy the "more comprehensive, more accurate, more detailed and more complete geographic information service" which is advocated by the construction of Mapworld. To explore the reason, except for the abundant functions which are provided by Mapworld public service platform itself, the main reason is that the platform lack the geographic data which is related to daily life closely.In this paper, for the reason of the existing problem that lack of geographic data resources in Mapworld public service platform of geographic information, take the "Mapworld of Changzhou" for example. On the basic of analysis of geographic data resources, to discuss the analytic method of different types of geographic data resources deeply though excavate the structural information and attribute information of geographic data resources that related to daily life closely which include searching and matching address, buying, public transportation, public comments and so on. It has realized the service synthesis of kinds of geographic data resources in the platform of "Mapworld of Changzhou", in addition, also enriched the geographic data resources which are provided by the platform and provided more abundant, informative, convenient geographic information service for public.Research contents and results in this paper are as follows:Firstly, the main source and classification of the current geographic spatial data resources is analysed. In the view of information resources of public service, the types and basic characteristics of geographic data resources which are related to public life closely are summarized. Secondly, the parsing, analyzing and aggregation methods of the online service datasets, online text data and other geographic data are explored and the analysis and aggregation technology plan for many kinds of geographic data is provided.Thirdly, the construction requirements and general framework of the national, provincial and municipal node on "Mapworld" are studied. On this basic, this paper provides the analysis and aggregation prototype system framework of some kinds of geographic data which linked to public service closely. It has realized the aggregation of the data of buying, transit, public comments and other geographic data resources in the "Mapworld of Changzhou" platform.