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Geoportals also form a key component of commercial cloud-based GIS platforms, providing a library of geographic data that users can employ with online GIS tools or desktop GIS software. Google Earth Engine is a cloud-based image processing platform that includes a portal to several petabytes of satellite imagery.
English: The maps use data from nationalatlas.gov, specifically countyp020.tar.gz on the Raw Data Download page. The maps also use state outline data from statesp020.tar.gz . The Florida maps use hydrogm020.tar.gz to display Lake Okeechobee.
Google Earth is a web and computer program that renders a 3D representation of Earth based primarily on satellite imagery.The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles.
Currently, the best source for nationwide LiDAR availability from public sources is the United States Interagency Elevation Inventory (USIEI). [1] The USIEI is a collaborative effort of NOAA and the U.S. Geological Survey, with contributions from the Federal Emergency Management Agency, the Natural Resources Conservation Service, the US Army Corps of Engineers, and the National Park Service.
OpenStreetMap (abbreviated OSM) is a free, open map database updated and maintained by a community of volunteers via open collaboration. [4] Contributors collect data from surveys, trace from aerial photo imagery or satellite imagery, and import from other freely licensed geodata sources.
After identifying mentions of places and locations in text, a GIR system indexes this information for search and retrieval. GIR systems can commonly be broken down into the following stages: geoparsing , text and geographic indexing, data storage, geographic relevance ranking with respect to a geographic query and browsing results commonly with ...
York County (formerly Charles River County) is a county in the eastern part of the Commonwealth of Virginia, located in the Tidewater.As of the 2020 census, the population was 70,045. [1]
Online collection of all digital USGS 1:24K scale topographic maps (as well as various other GIS data) covering the United States, available as a free download. NPScape United States Department of the Interior National Park Service NPScape is a landscape dynamics monitoring project that provides landscape-level data, tools, and evaluations for ...