Читать книгу GIS Research Methods - Steven J. Steinberg - Страница 79

US Census Bureau, Geography (http://www.census.gov/geo/maps-data/data/tiger.html): This website presents the TIGER (Topologically Integrated Geographic Encoding and Referencing) files. The US Census Bureau offers various file types on its website to map its geographic data.

Esri, ArcGIS Content (http://www.esri.com/data/find-data): This website provides information on different types of maps, such as basemaps, reference maps, and specialty maps. It also discusses how demographic and lifestyle data can be used in Esri products.

US Environmental Protection Agency, Browse Data Dictionaries by Table (http://iaspub.epa.gov/sor_internet/registry/datareg/searchandretrieve/datadictionaries/browse.do): This website presents the various elements that exist in data dictionaries and includes a complete list of all of the data dictionaries that the EPA possesses.

National Institutes of Health TOXMAP (http://toxmap.nlm.nih.gov/toxmap/flex/): A GIS from the Division of Specialized Information Services of the US National Library of Medicine that uses maps of the United States to help users explore data from the EPA’s TRI and Superfund Program.