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  2. Google Maps pin - Wikipedia

    en.wikipedia.org/wiki/Google_Maps_pin

    The Google Maps pin showing a location in the Google Maps app Google Maps logo as of 2020 The pin in Google headquarters, next to a Google Maps Street View vehicle. The Google Maps pin is the inverted-drop-shaped icon that marks locations in Google Maps. The pin is protected under a U.S. design patent as "teardrop-shaped marker icon including a ...

  3. Open Location Code - Wikipedia

    en.wikipedia.org/wiki/Open_Location_Code

    The Open Location Code (OLC) is a geocode based on a system of regular grids for identifying an area anywhere on the Earth. [1] It was developed at Google's Zürich engineering office, [2] and released late October 2014. [3] Location codes created by the OLC system are referred to as "plus codes".

  4. Survey marker - Wikipedia

    en.wikipedia.org/wiki/Survey_marker

    NGS Survey Data Explorer is an interactive map that will find markers in a selected location. Marker types identified. Marker links to data sheet. This website provides a state-by-state mapping of NGS survey marks on to Google Maps, enabling one to search for these marks visually. Description and history of the types of markers used in the ...

  5. Geocode - Wikipedia

    en.wikipedia.org/wiki/Geocode

    So, the most general case is a table of standard names and the corresponding standard codes (and its official geometries). Germany (DE) with each first-level administrative subdivision labelled with the second part of its ISO 3166-2 code. The 21 top-level 2-digit "region" of hydrologic unit boundaries, using the HUC geocode conventions.

  6. List of principal and guide meridians and base lines of the ...

    en.wikipedia.org/wiki/List_of_principal_and...

    Figure 1. This BLM map depicts the principal meridians and baselines used for surveying states (colored) in the PLSS. The following are the principal and guide meridians and base lines of the United States, with the year established and a brief summary of what areas' land surveys are based on each.

  7. Station numbering - Wikipedia

    en.wikipedia.org/wiki/Station_numbering

    The station number often consists of two parts: the line symbol part, which contains the initial part of the line name or number (as seen below) and the station symbol part, which consists of the numerical positioning of the station relative to the railway line and its starting station number (example listed below)

  8. Military Grid Reference System - Wikipedia

    en.wikipedia.org/wiki/Military_Grid_Reference_System

    The intersection of a UTM zone and a latitude band is (normally) a 6° × 8° polygon called a grid zone, whose designation in MGRS is formed by the zone number (one or two digits – the number for zones 1 to 9 is just a single digit, according to the example in DMA TM 8358.1, Section 3-2, [1] Figure 7), followed by the latitude band letter ...

  9. Keyhole Markup Language - Wikipedia

    en.wikipedia.org/wiki/Keyhole_Markup_Language

    It was created by Keyhole, Inc, which was acquired by Google in 2004. KML became an international standard of the Open Geospatial Consortium in 2008. [1] [2] Google Earth was the first program able to view and graphically edit KML files, but KML support is now available in many GIS software applications, such as Marble, [3] QGIS, [4] and ArcGIS ...