Information Systems

Download A Hierarchical Coordinate System for Geoprocessing and by Geoffrey H. Dutton PDF

By Geoffrey H. Dutton

Whilst spatial info is digitized to be used in geographic details structures and different software program, information regarding its unique scale, solution and accuracy is often misplaced. therefore, utilizing such details at diverse scales and mixing it with facts from different resources should be tough. Mapping vector facts at smaller than the unique scale calls for its generalization, that is frequently dealt with via post-processing in ways in which are just weakly supported via databases. The versions and techniques defined during this ebook conquer many such difficulties by means of supplying a multi-resolution info illustration that permits retrieval of map info 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

Similar information systems books

Communicating Process Architectures 2007: WoTUG-30

This ebook offers with machine technology and types of Concurrency. It relatively emphasises on hardware/software co-design, and the knowledge of concurrency that effects from those structures. various papers in this subject were integrated, from the formal modeling of buses in co-design platforms via to software program simulation and improvement environments.

Spatial Databases: With Application to GIS (The Morgan Kaufmann Series in Data Management Systems)

This textbook is a superb source for individuals in particular attracted to the theoretical nuts and bolts of spatial databases. The booklet covers loads of floor in precisely over four hundred pages. it'd be a great textual content for a sophisticated GIS programming path for both geography scholars or laptop technology scholars.

Annual Report on the OECD Guidelines for Multinational Enterprises: 2003 Edition: Enhancing the Role of Business in the Fight Against Corruption

The OECD directions for Multinational organizations are techniques to multinational firms on their behavior in such parts as labour, setting, buyer safeguard and the struggle opposed to corruption. The techniques are made via the a

International Entrepreneurship In Small And Medium Size Enterprises: Orientation, Environment And Strategy (The Mcgill International Entrepreneurship Series)

The drivers of globalization are elimination the limitations that segregated the aggressive house of the small and massive corporations long ago. it really is turning into more and more tricky for autonomous small agencies to thrive of their conventional markets until they're globally aggressive. dealing with an enterprise's advertisement, business and political kinfolk good, despite measurement and placement, is the essence of the entrepreneurial problem during this aggressive area.

Additional info for A Hierarchical Coordinate System for Geoprocessing and Cartography (Lecture Notes in Earth Sciences)

Sample text

2. The triangular subdivisions of octants are identified by adding a quaternary digit (0, 1, 2 or 3) to a series of them built up in the course of fixing a location. Upon reaching a point's limit of precision the process stops, and the sequence of digits becomes the QTM address (a quadtree leaf node which we denote as QTM ID) of that point. Address digits are assigned to quadrants according to a method that always numbers the central one 0, but permutes the other three identifiers at each level.

The potential utility of the approach to location modeling described in this thesis extends beyond map generalization, to indexing of point, vector and raster terrestrial and astronomical data, modeling global environmental phenomena and processes, and multi-scale terrain modeling. All of these areas have been addressed by researchers exploring hierarchical polyhedral planetary representations, some derived from the author's work, others closely related to it. The scope and context of these investigations are summarized in the next chapter, following a descriptive overview of our specific approach to modelling geographic location.

4 illustrates have been proposed but will not be dealt with here. To our knowledge, no one has suggested using the simplest polyhedron - - a tetrahedron (4 facets) - - as the basis for a global spatial data model. Regardless of its orientation, it would generate an even more non-intuitive coordinate system, a stranger distribution of land masses, and introduce more projection distortions than larger polytopes make necessary. But it is certainly possible to do this. Even in this tidy little universe of solid forms, there are quite a lot of geometric possibilities, each with its own computational twists.

Download PDF sample

Rated 4.14 of 5 – based on 4 votes