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OpenStreetMap (abbreviated OSM) is a free, open geographic database updated and maintained by a community of volunteers via open collaboration. Contributors collect data from surveys , trace from aerial photo imagery or satellite imagery , and also import from other freely licensed geodata sources.
Under Chinese law, the use of geographic information in the People's Republic of China is restricted to entities that have special authorization from the administrative department for surveying and mapping under the State Council. [1] Consequences of the restriction include fines for unauthorized surveys, lack of geotagging information on many ...
Tiled web maps are normally displayed with no gap between tiles. A tiled web map, slippy map[1] (in OpenStreetMap terminology) or tile map is a map displayed in a web browser by seamlessly joining dozens of individually requested image or vector data files. It is the most popular way to display and navigate maps, replacing other methods such as ...
Open Database License. The Open Database License (ODbL) is a copyleft license agreement intended to allow users to freely share, modify, and use a database while maintaining this same freedom for others. [2] ODbL is published by Open Data Commons, which is part of Open Knowledge Foundation. [3]
Go to the OSM Relation Analyzer. Type in the item name and click 'Search'. Click the relevant relation ID (generally several digits long), then click 'Browse' to see it on the OpenStreetMap website. If you found the data on OSM, continue on to Part 3. If you did not find it, continue to Part 2 first to create the shape on OpenStreetMap.
www.osmfoundation.org. The OpenStreetMap Foundation (abbreviated OSMF) is a non-profit foundation whose aim is to support and enable the development of freely-reusable geospatial data. Founded in 2006, it is closely connected with the OpenStreetMap project, although its constitution does not prevent it supporting other projects.
This template provides a standardised colour/Color pallete for use with OSM Location Maps. The following color descriptors (not following any particular external precedent) can be used within OSM maps to provide a consistent and sympathetic color scheme for text labels and shape colors, using pastel shades that fit well alongside the existing map colors:-
An isochrone (iso = equal, chrone = time) is defined as "a line drawn on a map connecting points at which something occurs or arrives at the same time". [2] In hydrology and transportation planning isochrone maps are commonly used to depict areas of equal travel time. The term is also used in cardiology [3][4][5] as a tool to visually detect ...