1. kitya's Avatar
    Maps Tool - new free app (with no ads either) to work with gps coordinate, maps and grids, including public land survey system (township, range, section)!

    Do you happen to own some real paper maps? If so, my new app is designed exactly to make using them simpler. Or maybe you are just interested to learn something about geodesy, navigation and cartography? If so read on.

    While most online and other digital maps are now standardized around using decimal degrees latitude/longitude pairs using WGS84 geodesic datum, paper maps are not so simple. They use all kinds of different coordinate system. Many use UTM Universal Transverse Mercator coordinate system that was developed by the United States Army Corps of Engineers in the 1940s. NATO militaries around the world wanted their own thing and developed another grid coordinate system called MGRS. While these two are most popular there are many more other grids, especially once we go to local level. Maps in UK often use something called Ordinance Survey National Grid (OSGB) while Ireland had to use yet another system called Irish Grid.

    To make things even more complicated years before recent standardization around WGS84, maps often used other geodesic datum, based on different models of earth ellipsoid and measurements. In fact many historic reference earth ellipsoids are still used in local areas, since they may provide better accuracy of measurements in certain territories. In practice this means that getting coordinates assuming wrong datum can put you hundreds of meters away.

    Maps Tool is a powerful app that allows you to convert data between many coordinate system representations and also adjust for various datum. This app currently supports lat/lng, UTM, MGRS, Earth-centered, Earth-fixed Cartesian coordinate system, Swedish Grid, Ordnance Survey of Great Britain and Irish National Grid and many different geodetic datums, including, but not limited to: WGS 84, NAD 27, ED 50, ETRF 89, OSGB 36, OSI 65, RT 90, SWEREF 99, SIRGAS 2000, SAD 69, Crrego Alegre, SICAD, Astro Chu and SK 42.

    By default Maps Tool uses offline HERE+ maps already stored on your phone, but can also use Bing Maps, Google Maps, and OpenStreetMaps for better coverage. Overlays such as topographic map and satellite imagery are also available. Other handy function of Maps Tool include geocoding (finding location by address) and reverse geocoding (find closest address for a given location), sharing your location via sms/email and build-in database of around 3000 major cities and 9000 world airports for quick access (you can just key in a 3-letter IATA or 4-letter ICAO code).

    Using web service from BLM (Bureau of Land Management) Maps Tool also gives you access to PLSS (Public Land Survey System) information (township, range, section) as a convenient map overlay (you can search for parcels by TRS or view parcels around you by tapping on the map).

    Last but not least, Maps Tool app allows you to see rough altitude information from the GPS module in your phone, or (available as an optional download) query various GIS systems for accurate topographical altitude information including currently supported: USGS (US only), SRTM3, GTOPO30, ASTER and Google.

    Best of all this app does not require a data connection to work, so you can take it with you into the field.

    It is currently translated to English, Russian and Japanese and if you can help with more languages - please let me know.

    Here is the store link:Maps Tool | Windows Phone Apps+Games Store (United States)
    05-30-2014 06:16 PM
  2. anon(7900571)'s Avatar
    Thanks for supporting and brining great apps to our platform , good luck for your app :)
    Guytronic likes this.
    05-30-2014 07:17 PM
  3. TheMightyCraken's Avatar
    Thanks for making this awesome app for WP, downloading it as we speak.
    anon(7900571) likes this.
    05-30-2014 10:01 PM

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