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  2. Shapefile - Wikipedia

    en.wikipedia.org/wiki/Shapefile

    The shapefile format is a digital vector storage format for storing geographic location and associated attribute information. This format lacks the capacity to store topological information. The shapefile format was introduced with ArcView GIS version 2 in the early 1990s. It is now possible to read and write geographical datasets using the ...

  3. World file - Wikipedia

    en.wikipedia.org/wiki/World_file

    The generic meaning of the six parameters in a world file (as defined by Esri [1]) is: Line 1: A: pixel size in the x-direction in map units/pixel; Line 2: D: rotation about y-axis; Line 3: B: rotation about x-axis; Line 4: E: pixel size in the y-direction in map units, almost always negative [b] Line 5: C: x-coordinate of the center of the ...

  4. Comparison of GIS vector file formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_GIS_vector...

    National Transfer Format (NTF) – National Transfer Format (mostly used by the UK Ordnance Survey) Shapefile – open, hybrid vector data format using SHP, SHX and DBF files (by ESRI) Spatial Data File – high-performance geodatabase format, native to MapGuide (by Autodesk) TIGER – Topologically Integrated Geographic Encoding and Referencing

  5. GIS file format - Wikipedia

    en.wikipedia.org/wiki/GIS_file_format

    MapInfo TAB format – MapInfo's vector data format using TAB, DAT, ID and MAP files; Measure Map Pro format – XML data format to store GIS data; National Transfer Format (NTF) – National Transfer Format (mostly used by the UK Ordnance Survey) Spatialite – a spatial extension to SQLite, providing vector geodatabase functionality.

  6. List of GIS data sources - Wikipedia

    en.wikipedia.org/wiki/List_of_GIS_data_sources

    SoilGrids1km is a collection of updatable soil property and class maps of the world at a resolution of 1 km produced using state-of-the-art model-based statistical methods. Presents estimates (means and 90% confidence intervals) for pH, texture (sa, si, cl), organic carbon and more for 6 depth layers up to 2 m depth. Harmonized World Soil Database

  7. Digital Chart of the World - Wikipedia

    en.wikipedia.org/wiki/Digital_Chart_of_the_World

    The Digital Chart of the World (DCW) is a comprehensive digital map of Earth. It is the most comprehensive geographical information system (GIS) global database that is freely available as of 2006, although it has not been updated since 1992.

  8. Global Administrative Unit Layers - Wikipedia

    en.wikipedia.org/wiki/Global_Administrative_Unit...

    The GAUL always maintains global geographic layers (in shapefile format) with a unified coding system at the levels of country, first administrative (e.g. regions), and second administrative (e.g. districts). In addition, when data is available, it provides layers on a country-by-country basis down to third, fourth and lower levels.

  9. Vector Map - Wikipedia

    en.wikipedia.org/wiki/Vector_map

    The Vector Map (VMAP), also called Vector Smart Map, is a vector-based collection of geographic information system (GIS) data about Earth at various levels of detail. Level 0 (low resolution) coverage is global and entirely in the public domain. Level 1 (global coverage at medium resolution) is only partly in the public domain.