Cartography: Visualization of Geospatial Data, 3rd Edition by Menno-Jan Kraak, Ferjan Ormeling

By Menno-Jan Kraak, Ferjan Ormeling

This revised and up to date variation integrates the newest in smooth know-how with conventional cartographic ideas. whereas supplying a superb conceptual starting place in cartographic technique, the textual content additionally introduces the very most up-to-date advances that experience enormously encouraged cartographic ideas. the hot version displays the expanding significance of cartography because the foundation for extra geographical research, the textual content has been up-to-date all through and chapters at the newest advancements in cartography were built-in. there's additionally a extra common emphasis on multimedia and the net.

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Extra info for Cartography: Visualization of Geospatial Data, 3rd Edition

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Org/). This is a non-profit, international, voluntary consensus standards organization that is leading the development of standards for geospatial and location-based services and has companies, government agencies and universities as members. The standards and protocols describe interfaces and encodings that allow so-called geoservices to operate. This means that data providers can offer their products in a standard way. 16 Maps used on the web as index to other (geo-) information, as part of a search engine, and preview of geospatial data offered In order to enable data users to find out whether data sets from different sources can be combined at all, clearinghouses are being set up.

Examples are Oracle’s Geospatial and IBM’s DB2 spatial extender. Also popular are the Opensource databases such as MySQL and PostgreSQL. 6 Control and accuracy The advent of GIS has accelerated and simplified the process of information extraction and communication. Combining or even integrating various data sets was made possible on a large scale. The ease with which operations can be effected provides a danger as well, as technical possibilities will also allow for irrelevant or inconsistent data integration.

4) register with a specific number of dots per inch, indicating the smallest areal units for which information is being determined. 01 mm2 are represented independently. See Plate 4. Equally important as the geometrical resolution is the radiometric one. It refers to the number of colours that can be differentiated between by the scanner and to its display capabilities as well. In contrast to vector files, transforming raster files to other projections is very difficult. Coordinate systems with which the images are overlaid cannot easily be changed for other systems.

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