Topographic maps are based on topographical surveys. Performed at large scales, these surveys are called topographical in the old sense of topography, showing a variety of elevations and landforms. This is in contrast to older cadastral surveys, which primarily show property and governmental boundaries. The first multi-sheet topographic map series of an entire country, the Carte géométrique de la France, was completed in 1789. The Great Trigonometric Survey of India, started by the East India Company in 1802, then taken over by the British Raj after 1857 was notable as a successful effort on a larger scale and for accurately determining heights of Himalayan peaks from viewpoints over one hundred miles distant.
Global indexing system first developed for International Map of the World
Topographic surveys were prepared by the military to assist in planning for battle and for defensive emplacements (thus the name and history of the United Kingdom's Ordnance Survey). As such, elevation information was of vital importance.
As they evolved, topographic map series became a national resource in modern nations in planning infrastructure and resource exploitation. In the United States, the national map-making function which had been shared by both the Army Corps of Engineers and the Department of the Interior migrated to the newly created United States Geological Survey in 1879, where it has remained since.
1913 saw the beginning of the International Map of the World initiative endeavoring to map all of Earth's significant land areas at 1:1 million scale on about one thousand sheets covering four degrees latitude by six or more degrees longitude. Excluding boundaries, each sheet was 44 cm high and (depending on latitude) up to 66 cm wide. Although the project eventually foundered, it left an indexing system that remains in use.
By the 1980s, centralized printing of standardized topographic maps began to be eroded by databases of coordinates that could be used on computers by moderately skilled end users to view or print maps with arbitrary contents, coverage and scale. For example the Federal government of the United States' TIGER initiative compiled interlinked databases of federal, state and local political borders and census enumeration areas, and of roadways, railroads, and water features with support for locating street addresses within street segments. TIGER was developed in the 1980s and used in the 1990 and subsequent decennial censuses. Digital elevation models (DEM) were also compiled, initially from topographic maps and stereographic interpretation of aerial photographs and then from satellite photography and radar data. Since all these were government projects funded with taxes and not classified for national security reasons, the datasets were in the public domain and freely usable without fees or licensing.
Tererra Incorporated has integrated newest hardware technologies together with custom operating system enhancements to deliver an accelerated storage solution that is very cost effective. Many companies would like to invest heavily in 10G, 40G, or even 56G network topographies in 2015 and 2016. This customer demand also requires a cost effective storage solution which can handle these speeds. Switch manufacturers are making this a cost effective investment with newest pricing strategies and affordable switches and network cards. Storage manufacturers however, are not effectively targeting cust..
The Tererra Network provides enhanced ISP services, and provides a single fully integrated connectivity solution. The Tererra Network is a world spanning Ethernet/IP network that runs over our privately managed network infrastructure along with its other network products including StratofLash storage, Stratorender GPU rendering, SDN/MPS, Ethernet and Wave Division Multiplexing services.
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We are pleased to announce the complete and 100% cloud free data over all of the European Union in 2016. The data has been amassed through five years of mapping and project work. It is delivered as GeoTIFF on more than 10TB of hard drives, with a WGS84 and Geodetic datum and projection. We can grid-n-tile the data as you like, in a variety of geospatial file formats.
EarthOnDrive/WavGen have recently partnered with Battlespace Simulatons Inc., to provide a rich geospatial data environment using 15m Landsat Imagery, and very high resolution CONUS aerial imagery for tactical and ground based military and defense simulations. GIS-enabled: Pan, Scale or Zoom anywhere on Earth. Support for all the most common GIS formats, including NGA's aeronautical charts (GNC, JNC, ONC, TPC) in CADRG format; GeoTiff and Vector formats (VPF and SHP).
BSI provides world-class, PC-based simulation solutions, including MACE, the flagship product providing computer g..