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The region of economic circle, based on central cities of developed economy and strong urban functions as the core, is covered by the central cities and a number of neighboring cities with which they have strong economic ties. In order to achieve equilibrium state between transportation efficiency of traffic network and transportation requirement of economic circle, the relationship between economic...
Based on the "quasi tri-prism" model and the improved borehole data recording approach, this paper presents a method of "dummy borehole chain" to control the complicated geo-body modeling. An algorithm was designed to identify the fold, the lens body, the pinch and the fault automatically. The proposed "window densification" in this paper was used to handle the TIN densification...
Various vector data to establish topological relation and association are the key issues of geographic information system, patch of the surface, that is polygon, whose generation is the core of establishing topology. This paper put forward auto-construction algorithm is to judge polygon's direction that based on azimuth left turn algorithm. Patch (polygon) auto-construction algorithm calculates azimuth,...
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