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Data Sources: 1:10M Satellite-derived land cover data and shaded relief with ocean bottom data from NaturalEarthData.com 2015; American Indian Reservation data last updated in 2005 from US Census data and USGS 1:24,000 topographic maps; "ESRI Data and Maps" 2008; Oklahoma Tribal Statistical Area: Census Bureau (TIGER) data, Eastern Regional ...
The USGS Gap Analysis Program maintains four primary data sets: land cover, protected areas, species and aquatic. The GAP Land Cover Data Set is the most complete map ever produced of vegetative associations for the US. Classified into 551 ecological systems, and 32 modified ecological systems (where human impacts have had an effect).
A supervised classification is a system of classification in which the user builds a series of randomly generated training datasets or spectral signatures representing different land-use and land-cover (LULC) classes and applies these datasets in machine learning models to predict and spatially classify LULC patterns and evaluate classification accuracies.
ArcReader (freeware, viewer) is a basic data viewer for maps and GIS data published in the proprietary Esri format using ArcGIS Publisher. The software also provides some basic tools for map viewing, printing and querying of spatial data. ArcReader is included with any of the ArcGIS suite of products, and is also available for free to download.
The primary source for this database is the United States Defense Mapping Agency's (DMA) operational navigation chart (ONC) 1:1,000,000 scale paper map series produced by the US, Australia, Canada, and the United Kingdom.
It is developed and regulated by Esri as a mostly open specification for data interoperability among Esri and other GIS software products. [1] The shapefile format can spatially describe vector features: points , lines , and polygons , representing, for example, water wells , rivers , and lakes .
With 40% market share as of 2011, Esri is one of the world's leading supplier of GIS software, web GIS and geodatabase management applications. [ 7 ] [ 8 ] Founded in 1969 as a land-use consulting firm, Esri currently has 49 offices worldwide including 11 research and development centers in the United States, Europe, the Middle East and Africa ...
Land cover is the physical material at the land surface of Earth. Land covers include flora , concrete , built structures, bare ground, and temporary water . Earth cover is the expression used by ecologist Frederick Edward Clements that has its closest modern equivalent being vegetation .