A Hierarchical Coordinate System for Geoprocessing and Cartography: Working Through the Scales

Dutton, Geoffrey

ISBN 10: 3540649808 / ISBN 13: 9783540649809

Editore: Springer 1998-10, 1998

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Codice articolo 6666-IUK-9783540649809

Dati bibliografici

• Titolo: A Hierarchical Coordinate System for Geoprocessing and Cartography: Working Through the Scales
• Editore: Springer 1998-10
• Data di pubblicazione: 1998
• Lingua: Inglese
• ISBN 10: 3540649808
• ISBN 13: 9783540649809
• Rilegatura: PF
• Condizione: New

Descrizione articolo

Riassunto

When spatial data is digitized for use in geographic information systems and other software, information about its original scale, resolution and accuracy is frequently lost. As a result, using such information at different scales and combining it with data from other sources may be difficult. Mapping vector data at smaller than the original scale requires its generalization, which is usually handled by post-processing in ways that are only weakly supported by databases. The models and methods described in this book overcome many such problems by providing a multi-resolution data representation that allows retrieval of map data at a hierarchy of scales, as well as documenting the accuracy of every spatial coordinate.

Contenuti

and problem statement.- Historical and conceptual background.- Computational aspects of a quaternary triangular mesh.- Using QTM to support map generalization.- QTM scale filtering: Tests and evaluations.- New approaches to cartographic questions.