Index Structure for the Multi-scale Representation of Multi-dimensional Spatial Data in WebGIS
Journal Title: International Journal on Computer Science and Engineering - Year 2010, Vol 2, Issue 3
Abstract
To solve the problem that existing data structure cannot support the multi-scale representation of multi-dimensional spatial data in Web eographic Information System (WebGIS), a modified data structure has been put forward: (1) getting the main tree from the deformation of the index structure of region quadtree partitioned on the basis of the rule of pyramid structure; (2) possessing the sub-tree structure supporting the overlap of multi-dimensional spatial data; (3)reflecting the changes in spatial resolution using the depth of the tree; (4)all the nodes of the tree are the container of spatial objects. The necessity of generating the ndex is analyzed which is described. The algorithm for data generation of index structure, the support to the multi-dimensional data and the query process is discussed. For the same data source, some comparative experiments are provided using this structure and layer, and the result shows that this index method can represent and search massive multi-dimensional spatial data effectively in WebGIS. The structure has been used in Shanghai multi-dimensional WebGIS system.
Authors and Affiliations
ZhihanLV , GeCHEN , RuinaMA , YongHAN , TaoZhang
Keywords
Related Articles
- EP ID EP97255
- DOI -
- Views 127
- Downloads 0
Grid Scheduling using Differential Evolution (DE) for solving multi-objective optimization parameters
The computational grid is a collection and aggregation of parallel, distributed, and heterogeneous resources. Grid Scheduling is the complex issue to manage the heterogeneous resources. The proposed approach considers th...
Web Browser Personalisation Design of a Client Side Web-page Access Prediction Mechanism
Web usage prediction has become a widely addressed topic with the huge proliferation of World Wide Web and computers. Most of the work done in this area of research is centered around prediction of what links the user is...
Superresolution: A Novel Application to Image Restoration
The subject of extracting particular high-resolution data from low-resolution images is one of the most important digital image processing applications in recent years, attracting much research. This paper shows how to i...
“An Improved Round Robin Scheduling Algorithm for CPU scheduling”
There are many functions which are provided by operating ystem like process management, memory management, file management, input/output management, networking, protection system and command interpreter ystem. In these...
Performance of TCP/IP/ UDP adaptive header compression algorithm for wireless network
The convergence of mobile technologies will haracterize the future telecommunication systems based on TCP/IP protocols. These Protocols can be used to build both wired and wireless parts on same platform. But TCP/IP hea...