Abstract
Multi-scale Display Functions with ArcObjects Track: Cartography and Map Production Author(s): Peter Cowell, Thomas Zeng A method for automatically adjusting display of GIS data at different scales is presented derived from current methods for multi-scale data handling. The method proposes an ArcObject model to provide GIS display functions for multi-scale maps in a single dataset. The model exploits a combination of existing analytical GIS functions, such as buffering, centraID and central line. More specifically, the method generalises features in a dataset by displaying them at varying levels of detail appropriate to different mapping scales. To achieve this functionality, the data storage includes an attribute field containing information about a scale factor for dissolving detail. The advantages of the GIS display function include maintenance of data consistency and integrity, avoidance of data redundancy, andreduced duplication in data updating procedures. An example is given to demonstrate the method. Peter Cowell University of Sydney Geosciences Madsen Building, City Road Sydney , null 2006 AU Phone: 612 9351 2189 Fax: 612 9351 3644 E-mail: Cowell@mail.usyd.edu.au Thomas Zeng Sydney Olympic Park Authority 7 Figtree Drive Sydney Olympic Park Sydney , NSW 2127 AU Phone: 612 9714 7181 Fax: 612 9714 7818 E-mail: Thomas.Zeng@sopa.nsw.gov.au |
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