ABSTRACT:Database-driven cartography technology is just appeared in China. In China, it's the first time to use this technology in such a large national terrain information database. Especially in the particular 1:50000 scale, it will face a more complex situation. To effectively address the problem, with the database-driven cartography mechanism, it is very necessary to design scientific and rational model for data organization and presentation mechanisms, to ensure that the rich geographic information of terrain data can be expressed correctly, completely and beautifully in the topographic map. This paper mainly introduces the general design of data organization model of the cartography data. It also designed and developed national 1:50000 topographic cartography production system, and gave out related application example as a test of the idea mentioned. The application example proves that the data organization model designed here is feasible and efficient in nation 1:50000 topographic map production, and greatly reducing the workload of manual editing.

It has particularity and advantages to produce cartographic data of topographic maps based on the national fundamental geographic information database, using databasedriven topographic mapping technology. The paper takes the case of quality control on the recent national 1:50000 cartographic data of topographic maps as an example. It firstly introduces the whole quality control mechanism of cartographic data products based on the digital line graph. Then, it presents the whole quality control mechanism that involves both sides of technology and management. Furthermore, the paper mainly presents the all quality inspection of the national 1:50000 cartographic data of topographic map before establishing a database that includes operational flow, the technique method, and so on.Keywords-quality control; 1:50000 cartographic data of topographic map ； representation rule ； national fundamental geographic information database; database-driven topographic mapping

Abstract. Accurate road network information is the foundation of urban construction, traffic planning and emergency response, and also provides necessary assistance for public travel. How to provide global road network data products with complete elements, rich attributes, and high precision is a problem that must be considered in the reserve of basic geographic information resources.This paper studies the geometric information fusion of multi-source data based on OSM road network data, mainly carries out relevant research work on the identification and matching of homonymous entities, and proposes a method based on traceability mechanism to solve the problem of inconsistent geographical location in different data sets after topology preprocessing of homonymous features, so as to improve the integrity and accuracy of road network data after fusion.This paper proposes a method based on traceability mechanism, and explores a technical processing flow of global road network data fusion. The test process greatly improves the matching effect of entities with the same name in different data sets, greatly ensures the original topology relationship, and improves the integrity and accuracy of the fused road network data. The data test result shows that this method has certain application value and can basically meet the actual needs of multi-source road network data fusion from a global perspective.

<p><strong>Abstract.</strong> Public welfare maps are thematic maps for macro-planning, emergency relief, decision-making and daily office work of government departments. Public welfare maps are used to serve the government.</p><p>Public welfare maps are used to serve the government. In recent years, the state has become more and more demanding for the rapid guarantee service work of public welfare maps of surveying and mapping product. It shows that the demand for high-potential, high-quality geographic information high-efficiency and spiritual services is becoming more and more urgent. Therefore, research The rapid production technology of public welfare maps has also become an urgent requirement. In response to this demand, this paper studies the key issues of rapid map production, such as rapid positioning, projection and scale adaptation, layout and off-line adaptive self-adaptation, and its solutions.</p><p>Firstly, this paper introduces the necessity of adaptive mapping, the model and algorithm of adaptive mapping. Then introduces projection and scale adaptation, layout and out-of-map integer adaptation. Finally, based on the above research results, a rapid producting system for public welfare maps is developed. We compile sample map and test performance using the system. The result show that the paper‘s methods can improve the efficiency of Public welfare map producting, and provide powerful technical support for quickly service.</p>