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  2. MapInfo TAB format - Wikipedia

    en.wikipedia.org/wiki/MapInfo_TAB_format

    The basic file components for a MapInfo Professional data set relate to the two basic environments for working in MapInfo; "Browser View" and "Mapper View".. As with most other GIS packages, several files are required to allow the user to open a data set for viewing within MapInfo Professional.

  3. List of GIS data sources - Wikipedia

    en.wikipedia.org/wiki/List_of_GIS_data_sources

    Kentucky Geography Portal The Kentucky Geoportal is a Data Clearinghouse that provides ays to discover and share geospatial data resources. Locate maps and geographic data content for a particular part of the state or search based on keyword or theme type.

  4. Geographical distance - Wikipedia

    en.wikipedia.org/wiki/Geographical_distance

    View from the Swabian Jura to the Alps. Geographical distance or geodetic distance is the distance measured along the surface of the Earth, or the shortest arch length.. The formulae in this article calculate distances between points which are defined by geographical coordinates in terms of latitude and longitude.

  5. United Nations geoscheme - Wikipedia

    en.wikipedia.org/wiki/United_Nations_geoscheme

    22 geographical subregions as defined by the UNSD. Antarctica is not shown.. The United Nations geoscheme is a system which divides 248 countries and territories in the world into six continental regions, 22 geographical subregions, and two intermediary regions. [1]

  6. ONS Open Geography Portal - Wikipedia

    en.wikipedia.org/wiki/ONS_Open_Geography_Portal

    The ONS Open Geography portal from the Office for National Statistics (ONS) provides free and open access to the definitive source of geographic information products, web applications, story maps, services and APIs. All content is available under the Open Government Licence v3.0, unless otherwise stated.

  7. Proportional symbol map - Wikipedia

    en.wikipedia.org/wiki/Proportional_symbol_map

    Eduard Imhof argued against this technique (which he called count frame diagrams) for point locations, on the grounds that it tends to be much larger and more complex than a simple point symbol, covering more of the underlying geography; however, he found them effective on region locations, especially if the count consists of different types of ...

  8. Geographic information system - Wikipedia

    en.wikipedia.org/wiki/Geographic_Information_System

    GIS seems to provide many advantages in teaching geography because it allows for analysis based on real geographic data and also helps raise research questions from teachers and students in the classroom. It also contributes to improvement in learning by developing spatial and geographical thinking and, in many cases, student motivation.

  9. Topologically Integrated Geographic Encoding and Referencing

    en.wikipedia.org/wiki/Topologically_Integrated...

    TIGER logo. Topologically Integrated Geographic Encoding and Referencing, or TIGER, or TIGER/Line is a format used by the United States Census Bureau to describe physical and cultural features such as roads, highways, city limits, rivers, and lakes, as well as areas such as census tracts.