The Atlas describes and maps every change in the boundaries of all United States counties from the early 1600s to 2000. In addition, the atlas compiles and maps all changes in colonial or territorial and state boundaries, including the evolution of the states, plus county name changes, unsuccessful proposed counties, and attachments of unorganized counties and non-county areas to operational counties. In most cases, a separate map is available for each different county configuration. view maps or Download Historical State and County Shapefiles. Zipped files include maps, database and supplemental texts
a tool that can convert geographic coordinate data from one format to another. If you're not a map nut, that's the challenge one might encounter switching, for example, from latitude and longitude to Universal Transverse Mercator--or from geocentric latit
AktuellERHEBUNG ZUM GISREPORT 2005/2006Derzeit werden für denGIS-Report 2005/2006 die Daten erhoben und den Firmen die KorrekturbögenIhrer Softwareprodukte zugeschickt. Bis 01. Jannuar 2006 erhalten alle FirmeneinenKorrekturlaufIhrer Einträge.Firmen
CartoWeb is a comprehensive and ready-to-use Web-GIS (Geographical Information System) as well as a convenient framework for building advanced and customized applications.
CIESIN, the Center for International Earth Science Information Network, is a unit of the Earth Institute at Columbia University, based at the Lamont campus in Palisades, New York. CIESIN works at the intersection of the social, natural, and information sciences, and specializes in on-line data and information management, spatial data integration and training, and interdisciplinary research related to human interactions in the environment. CIESIN’s mission is to provide access to and enhance the use of information worldwide, advancing understanding of human interactions in the environment and serving the needs of science and public and private decision making.
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S. Göbel, M. Heidemann, U. Jasnoch, и G. Stumme. Hypermedia im Umweltschutz. 3. Workshop in Ulm 2000, Umwelt-Informatik aktuell, Bd. 24, стр. 169-179. Marburg, (2000)
O. Bedel, S. Ferré, O. Ridoux, и E. Quesseveur. DEXA Work. Advances in Conceptual Knowledge Engineering (ACKE), стр. 540--544. Regensburg, Germany, IEEE Computer Society, (2007)
O. Bedel, S. Ferré, O. Ridoux, и E. Quesseveur. DEXA Work. Advances in Conceptual Knowledge Engineering (ACKE), стр. 540--544. Regensburg, Germany, IEEE Computer Society, (2007)
O. Balovnev, M. Breunig, и A. Cremers. Advances in Spatial Databases, том 1262 из Lecture Notes in Computer Science, Springer, Berlin / Heidelberg, (1997)
D. Maguire, M. Goodchild, и D. Rhind (Ред.) Longman Scientific and Technical, Longman Group UK Ltd, Longman House, Burnt Mill, Harlow, Essex CM20 2JE, England, (1991)