Research On The Display Processing And Publish Technology Of Multi-scale Geographic Information

Accompanied with the rapid development of the computer and network technology,geographic information demand is widely used, the network geographic information service isbecoming a very common and effective geographic information application form. Datamanipulation and publish technology of multi-scale geographic information are the keyprocesses of the geographic information service. However, nowadays, the study on displaymanipulation of multi-scale geographic information is not thorough. Discrete scale to simulatethe continuous scale display is not so good. The theories on multi-scale classification are lack ofquantitative analysis and scientific research, etc. The level of Network service of geographicinformation needs to be improved.Aiming at the problems above, in view of the needs of the Network service of geographicinformation, this paper studies the theory and technologies of the Data manipulation andpublishes technology of multi-scale geographic information.1. Establishment the multisource and multi-scale geographic information organizationmodel. First of all, analyze data structure, and secondly, to use the data structure of conversion ofthe integration of fusion method, and finally, set up the organization classification type layeredstore data structure.2. Establishment the multi-scale geographic information processing model. Analyzing andimproving the multi-scale geographical information processing model, combined with therequirements of the multi-scale displays, to introduce the researching of multi-scale display ofclassification model.3. Research on the classification of multi-scale geographical information. Determine theclassification series and the contents of each one, which constitute a global to block that severallevels of multi-scale effect. The mainly research is on the elements of settlement place, drainageand roadway.4. The key technology of release. Including the transformation of mathematical foundationbetween different data sources, multi-scale display symbols library design, title index technology,and data transmission method.5. Facing elements of multi-scale classification and release methods and model.6. Experiments about multi-scale geographic information release.