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Two modes of rapid development platform are introduced briefly, and their deficiency are analyzed, a template-based framework for the rapid application development platform (RADP) is propose, and the various components of the framework are introduced, the advantages of the template framework and development prospects are summarized. At the last, the platform and common development methods are compared,...
3-D modeling and visualization of pipeline is an indispensable and important component that constructed digital city and implementation of pipeline management information system. This paper describes the basic steps that constructed 3-D pipeline connection by using the initial points set, and especially discusses the key issues of constructed the 3-D pipeline complexity connection by using OpenGL...
In this paper, a solution of QR+Tree spatial index structure and algorithms is proposed. Our aim is to meet the requirements of large-scale GIS database application and overcome the insufficiency of existing spatial index technology. Compared to other spatial index, this solution is more efficient. In this paper, we analyze about the performances of QR+Tree in insertion, deletion, and especially searching,...
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