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Monday, July 20, 2020 | History

2 edition of Automated aggregation of geographic objects found in the catalog.

Automated aggregation of geographic objects

J. W. N. van Smaalen

Automated aggregation of geographic objects

a new approach to the conceptual generalisation of geographic databases

by J. W. N. van Smaalen

  • 243 Want to read
  • 21 Currently reading

Published by Nederlandse Commissie voor Geodesie in Delft .
Written in English

    Subjects:
  • Geographic information systems.,
  • Geodatabases.

  • Edition Notes

    StatementJ.W.N. van Smaalen.
    SeriesPublications on geodesy,, 55, Publications on geodesy (Nederlandse Commissie voor Geodesie) ;, 55.
    Classifications
    LC ClassificationsG70.212 .S629 2003
    The Physical Object
    Pagination94 p. :
    Number of Pages94
    ID Numbers
    Open LibraryOL3366632M
    ISBN 109061322820
    LC Control Number2004436861
    OCLC/WorldCa54081492

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Automated aggregation of geographic objects by J. W. N. van Smaalen Download PDF EPUB FB2

By reference de-couples the lifetimes of the two objects. The whole may not have a part, or it may have a different part at different times. Different wholes may share the same part.

De-allocating the whole won't automatically de-allocate the part. Aggregation by reference allows for the part to be aware of its whole. Aggregation is accomplished via a distance criterion or containment, both of which are based on objects found in the destination layer.

Like dissolve and merge, the analyst must decide how existing. Anyway, at the more refined scale, electric poles, rivers, roads, tramlines, water pipes, fire hydrants, lakes, vineyards, agricultural land and the forest patches are examples of geographic objects.

Most of the tangible geographic objects have the defined acceptable. Introduction. Map generalization is a process that simplifies the representation of geographical data to produce a map at a smaller scale than that of the original (Robinson,Ai,Ai, Zhou, Zhang, Huang, & Zhou,Ai, Ke, Yang, & Li, ).During map generalization, aggregations constitute the most common hierarchy existing among the spatial objects on a map at different by: 3.

Van Smaalen, J. (): Automated Aggregation. of Geographic Objects – A New Approach to A source book of Gestalt psycholo-gy, pp. A Geographic Information System (GIS) is an organized integration designed to store, manipulate, analyze, and display geographically referenced information.

From: Intelligent Vehicles, Download as PDF. About this page. Automated Assessment and Data Management. Alain Lamarche, in Oil Spill Science and Technology, objects being part of a group (like the components of the meso objects from (Ruas & Duchêne )), and objects being in side an area (e.g.

a mountain road is inside a mountainous area). van Smaalen J () Automated aggregation of geographic objects. A new approach to the conceptual generalisation of geographic databases. PhD thesis, Wageningen University, The Netherlands Google Scholar.

Such objects, exactly located in space, can easily be handled by modern GIS, yet form only a small proportion of all the possible geographical objects.; This book challenges the assumption that the world is compsed of exactly defined and bounded geographic objects such as land parcels, rivers and countries.

ignoring the essential complexity of Cited by: Geographic objects can use the following units of measurement: length unit The unit of the length of a one-dimensional entity, such as a line string. For example, the unit can be kilometers, meters, or miles. area unit The unit of the area of a two-dimensional entity, such as a polygon.

For example, the unit can be km², m², and mi². A system and method for automatically georeferencing digitized images selects and analyzes image landmark points from disparate sources for image co-registration. A composite alignment of raster images and geographic target vectors is automatically generated using metadata sources for use in geographic display and editing by: (b) In deciding the most appropriate basis for aggregation when evaluating activities under more than one program, the responsible entity may choose: functional aggregation when a specific type of activity (e.g., water improvements) is to take place in several separate locales or jurisdictions; geographic aggregation when a mix of dissimilar.

The names pretty much imply all. An IS-A class can be thought of as specialized reference to an instance of another class that inherits all its attributes. If a class called Vehicle exists. Then any type of vehicle may inherit the attributes of this super-class.

For example Police Car will inherit all the attributes of Vehicle because it is a specialization of the latter. Geographic Information Systems Meta Aggregates over a given property of the objects in a collection, calculating the maximum of the values google-earth-engine aggregation.

asked Jun 30 '19 at Yingjie. Newest aggregation questions feed Subscribe to RSS. A vector based GIS is defined by the vectorial representation of its geographic data. According with the characteristics of this data model, geographic objects are explicitly represented and, within the spatial characteristics, the thematic aspects are associated.

There are different ways of organising this double data base (spatial and thematic).File Size: KB. Geographic Information Systems: Background and Basics. A comprehensive history of the development of geographic information systems is not currently available and is recognized as a difficult task because GIS developed along a number of parallel paths []; however, some major milestones are clearly development of computer-based geographic information systems (GIS) began in the Cited by: These objects enable the quantification of spectral, geometric, textural and contextual properties on actual ground features of interest that are comprised of one or more objects.

Object properties and adjacency/contiguity relationships between objects and ancillary data sources on transportation, terrain, demography, hydrology etc., are. ADVANCED GEOGRAPHIC INFORMATION SYSTEMS Query Optimization Issues 7. Transaction Management 8. I/O Processing and Indexing 9.

Building the Information System on Top of the Spatio-Temporal DBMS Conclusions and Future Perspectives Conceptual Modeling of Geographic Applications 87 Silvia Gordillo, University of la Plata, ArgentinaFile Size: KB. application of geographic information systems (GIS) and digital mapping in censuses since technical developments in computer hardware and mapping software have already encouraged many statistical and census offices to move from traditional cartographic methods to digital mapping and geographic information systems.

vital. Geographic imagination is essential so that we are able to transcend dichotomies such as nature vs. culture, national vs. international, or urban vs. wilderness, and further articulate the spatial framing of their dispositions Second, it is only through a geographic framework that architecture can disrupt the consensus on apocalyptic and.

The book deals with the integration of temporal information in Geographic Information Systems. The main purpose of an historical or time-integrative GIS is to reproduce spatio- temporal processes or sequents of events in the real world in the form of a model.

The model thus making them accessible for spatial query, analysis and visualization.A Geographic Information System (GIS) is a system designed to capture, store, manipulate, analyze, manage, and present spatial or geographic applications are tools that allow users to create interactive queries (user-created searches), analyze spatial information, edit data in maps, and present the results of all these operations.Aggregate Objects.

An aggregate is a collection of primitives, aggregate, and CSG objects. An aggregate, once defined, may be instantiated at will, which means that copies that are optionally transformed and textured may be made. If a scene calls for the presence of many geometrically identical objects, only one such object need be defined; the.