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The formats were originally defined by the Open Geospatial Consortium (OGC) and described in their Simple Feature Access [1] and Well-known text representation of coordinate reference systems [2] specifications. The current standard definition is ISO 19162:2019. [3] This supersedes ISO 19162:2015. [4]
The Garmin .img format is what Garmin devices use to store the maps for its GPS units. The img files contain a header and many subfiles. Img's filestore is based on FAT system. [1] Some old GPS units are not able to work with multiple img files so they need to be merged into one file called gmapsupp.img using programs like Mapsource. [2]
GPSBabel is a cross-platform, free software to transfer routes, tracks, and waypoint data to and from consumer GPS units, and to convert between GPS data formats. [2] It has a command-line interface and a graphical interface for Windows, macOS, and Linux users.
Informally, specifying a geographic location usually means giving the location's latitude and longitude.The numerical values for latitude and longitude can occur in a number of different units or formats: [2]
Using a GPS receiver with a clear view of the sky. Looking for "Waypoint" files on sites for GPS users, e.g. Geocaching.com; Outdooractive.com; Findu.com; Googling for a city name together with "latitude", "longitude" will usually yield a plethora of useful results ; Wikidata has geocoordinates for many objects
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Reverse geocoding is the process of converting a location as described by geographic coordinates (latitude, longitude) to a human-readable address or place name. It is the opposite of forward geocoding (often referred to as address geocoding or simply "geocoding"), hence the term reverse.
Geographic Data Files (GDF) is an interchange file format for geographic data.In contrast with generic GIS formats, GDF provides detailed rules for data capture and representation, and an extensive catalog of standard features, attributes and relationships.