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GTOPO30 is a digital elevation model for the world, developed by United States Geological Survey (USGS). It has a 30-arc second resolution (approximately 1 km), [1] and is split into 33 tiles stored in the USGS DEM file format. According to DTED and USGS DEM the absolute vertical accuracy of GTOP30 varies from ±30 meters. [2]
Some of the free software mentioned here does not have detailed maps (or maps at all) or the ability to follow streets or type in street names (no geocoding). However, in many cases, it is also that which makes the program free (and sometimes open source [ 1 ] ), avoid the need of an Internet connection, [ 2 ] [ 3 ] [ 4 ] and make it very ...
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.
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.
Google Street View is the most comprehensive street view service in the world. It provides street view for more than 85 countries worldwide. Bee Maps, powered by Hivemapper is the fastest growing mapping company in the world, mapping 29% of the world (until November 2024).
Maps-for-free.com; Geo-Spatial Data Acquisition Archived 2013-08-22 at the Wayback Machine; Elevation Mapper, Create geo-referenced elevation maps; Data products. Satellite Geodesy by Scripps Institution of Oceanography; Shuttle Radar Topography Mission by NASA/JPL; Global 30 Arc-Second Elevation (GTOPO30) by the U.S. Geological Survey
T Map by SK Telecom; One Navi by KT corporation; Spain. Spanish official cartography website, including National Topographic Maps MTN50 (1:50,000 scale) and MTN25 (1:25,000 scale). SITPA-IDEAS, Asturias regional maps. Sweden. Eniro.se, also covers Denmark, Finland and Norway; Hitta.se; Thailand "Longdo Map", by Longdo.
KartaView, formerly called OpenStreetView and OpenStreetCam, is a project to collect crowdsourced street-level photographs for improving OpenStreetMap [1] operated by Grab Holdings. [2] Collected imagery is published under a CC BY-SA license and while some of the project's code is released as open source , [ 1 ] much of it (most notably, the ...