Ontwikkeling van 'n driedimensionele netwerkmodule vir optimale roetebepaling

[摘要] ENGLISH ABSTRACT:A shortest or most economical route can easily be determined by using a geographicalinformation system (GIS). Unfortunately, most systems compute distances in twodimensional space. As computer-technology moves towards three dimensionalapplications, it is essential that GIS keeps up with this trend.In this research, the network module of Arc View (using Avenue) is customized, sothat topographical slope is considered in determining the shortest or most economicalroute.Two buttons were added to the normal Arc View interface. By doing it this way, theuser has the full functionality of Arc View, as well as the use of the new application.One button initiates a dialogue for capturing the economic parameters (fuel efficiency,oil usage, tyre usage, maintenance costs and capital costs) of a vehicle. The otherbutton selects a route network and uses a vehicle's economic parameters (asdetermined by the user) to calculate a most economical route.This thesis describes the procedure, logic and methodology followed in adding a mosteconomical route-selection function to Arc View. It also demonstrates the importanceof incorporating three dimensional space for determining a most economical route.The new function currently calculates a most economical route, based on vehiclerunning costs for Heavy Goods Vehicles (HGV's). The application performssatisfactorily, but there is scope for further development and refinement, both of theeconomical formulae for computing costs as well as of the graphic user interface(GUl). The flexibility of the system can be enhanced by providing for additionalclasses of vehicles.

[发布机构] Stellenbosch University