Information Systems

Download e-book for kindle: A Hierarchical Coordinate System for Geoprocessing and by Geoffrey H. Dutton

By Geoffrey H. Dutton

ISBN-10: 3540649808

ISBN-13: 9783540649809

While spatial facts is digitized to be used in geographic info structures and different software program, information regarding its unique scale, answer and accuracy is usually misplaced. hence, utilizing such details at diversified scales and mixing it with information from different resources can be tricky. Mapping vector information at smaller than the unique scale calls for its generalization, that's often dealt with by means of post-processing in ways in which are just weakly supported through databases. The types and strategies defined during this e-book triumph over many such difficulties through supplying a multi-resolution information illustration that permits retrieval of map facts at a hierarchy of scales, in addition to documenting the accuracy of each spatial coordinate.

Show description

Read Online or Download A Hierarchical Coordinate System for Geoprocessing and Cartography (Lecture Notes in Earth Sciences) PDF

Best information systems books

Get Management Information Systems (12th Edition) PDF

Administration details structures offers finished and integrative insurance of crucial new applied sciences, details procedure purposes, and their influence on enterprise versions and managerial decision-making in an exhilarating and interactive demeanour.

The 12th version makes a speciality of the main alterations which have been made in info expertise during the last years, and contains new beginning, last, and Interactive consultation cases.

Download e-book for kindle: Enterprise Ontology: Theory and Methodology by Jan Dietz

If something catches the attention in just about all literature approximately (re)designing or (re)engineering of agencies, it's the loss of a well-founded idea approximately their development and operation. usually even the main easy notions like "action" or "process" usually are not accurately outlined. subsequent, as a way to grasp the variety and the complexity of latest businesses, theories are wanted that separate the good essence of an firm from the variable manner during which it really is learned and carried out.

New PDF release: Terrain Analysis: Principles and Applications

The one reference at the use of GIS and similar applied sciences in terrain analysisIn this landmark e-book, reflecting the collaborative attempt of 13 study teams dependent in 4 international locations, major specialists aspect how GIS and similar applied sciences, corresponding to GPS and distant sensing, are actually getting used, because of laptop modeling, in terrain research.

Get Star Trek: Enterprise: Kobayashi Maru (Star Trek : PDF

To guard the shipment ships necessary to the continued lifestyles of the fledgling Coalition of Planets, the captains of the United Earth's Starfleet are ordered to interstellar wooden responsibility, with little extra to do than ask "Who is going there? " into the darkness of area. Captain Jonathan Archer of the firm™ seethes with frustration, pondering if someone else can see what he sees.

Extra resources for A Hierarchical Coordinate System for Geoprocessing and Cartography (Lecture Notes in Earth Sciences)

Example text

2 2 Historical and Conceptual Background Global Environmental Monitoring Until quite recently, polyhedral maps received little attention in professional cartographic circles, and even less in the GIS arena. However, a small amount of more serious interest has been evident in the literature of ecology and geosciences, in which the need for global sampling of environmental data periodically arises. The earliest digital implementation using polyhedra seems to be the one reported in Wickman et al (1974).

Also discussed are assessing and conditioning line data and approaches to identifying conflicts among map features due to scale change. Details of an operational data model are presented, followed by those of a line simplification algorithm for hierarchical coordinates and the control parameters it uses. The chapter closes with an explanation of the generation and handling of point-specific attributes (metadata), showing how they are used to guide point selection for line generalization. Chapter 5 describes how generalization methods presented in chapter 4 were implemented, and along with appendices C and D, presents results of generalization experiments using two shoreline datasets.

While this thesis is not directly concerned with overlay techniques, it is important to understand their implications for data quality management. Whenever spatial data from different sources are integrated, the lineage of the result becomes heterogeneous. Map overlay works at such a fine-grained scale that many individual features in the resultant layer contain data from two sources (or even more if overlays are cascaded). attributes and metadata for the resultant layer can indicate what sources formed it, and carry over descriptions of their quality, but they cannot easily indicate which portions of particular features came from what source.

Download PDF sample

A Hierarchical Coordinate System for Geoprocessing and Cartography (Lecture Notes in Earth Sciences) by Geoffrey H. Dutton


by Richard
4.0

Rated 4.01 of 5 – based on 35 votes