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A hierarchical coordinate system for geoprocessing and cartography Libro electrónico autor: Geoffrey H. Dutton

Tipo de material: Libro
 en línea Libro en línea Idioma: Inglés Series Detalles de publicación: New York, New York, United States Springer c1999Descripción: xviii, 230 páginas ilustraciones mapas 24 centímetrosISBN:
  • 3540649808
  • 9783540649809 (Print)
  • 9783540498025 (Online)
Tema(s): Recursos en línea: Formatos físicos adicionales disponibles:
  • Disponible en línea
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Resumen:
Inglés

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.

Número de sistema: 55817
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Incluye bibliografía e índice: páginas 221-228

1. Introduction and problem statement.. 2. Historical and conceptual background.. 3. Computational aspects of a quaternary triangular mesh.. 4. Using QTM to support map generalization.. 5. QTM scale filtering: Tests and evaluations.. 6. New approaches to cartographic questions.. Index

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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. Inglés

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