Converting hddd.mm.mmm to hddd.ddddd

Discussion in 'General GPS' started by scootersite@NOSPAMhotmail.com, Feb 23, 2005.

  1. Guest

    Hope this isn't too stupid but could someone tell me how to convert
    "hddd,mm.mmm" to "hddd.ddddd"
    Example: N39 01.151 x W76 .45.856
    I'm new to all GPS.
    Thanks
     
    , Feb 23, 2005
    #1
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  2. Graham W Guest

    wrote:
    > Hope this isn't too stupid but could someone tell me how to convert
    > "hddd,mm.mmm" to "hddd.ddddd"
    > Example: N39 01.151 x W76 .45.856
    > I'm new to all GPS.


    Can you do time?

    One minute of time is 1/60 of one hour, and one second is 1/60 of one
    minute.

    2 hours 15 minutes is 2.25 hours since 15 minutes is 15/60 (0.25) hours.


    Position is no different. Sixty minutes make up each degree.
     
    Graham W, Feb 23, 2005
    #2
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  3. Guest

    Better yet, go into your GPS setup menu. Set the coordinate format to
    hddd.ddddd". Enter the coordinates. Now go back into setup and change
    the coordinates to the desired format.

    Rich Owings
    www.MakeYourOwnMaps.com

    "We were desert mystics, my friends and I, pouring over our maps as
    others do their holy books." - Edward Abbey
     
    , Feb 23, 2005
    #3
  4. >>Hope this isn't too stupid but could someone tell me how to convert
    >>"hddd,mm.mmm" to "hddd.ddddd"
    >>Example: N39 01.151 x W76 .45.856


    By hand:
    Take the mm.mmm value and divide by 60, then add back in the whole number of
    degrees. Using your example and rounding to 5 decimal places:

    Northings: 1.151/60 = 0.01918. Merge back in the 39 to give 39.01918
    Eastings: 45.856/60 = 0.76427. Merge back in the 76 to give 76.76427

    Software:
    I imagine most applications will do this. Mine certainly will (free
    download from http://homepages.tesco.net/~Keith.Sheppard/MapMan.htm). Just
    click on the Tools menu and choose Convert Coordinates. Choose the same
    datum for both "Input Datum" and "Convert To". In your instance it doesn't
    matter too much what datum you choose as long as it's one which has
    coordinates in degrees. If in doubt, choose WGS84.

    If offered the choice, make sure you choose "Use latitude/longitude". Type
    in your Eastings and Northings and the answer will magically appear (in
    several formats) in the results box.

    Hardware:
    Your GPS has probably got a setting to change the display format to one
    which more accurately suits your requirements.

    Keith
     
    Keith Sheppard, Feb 23, 2005
    #4
  5. Dave Patton Guest

    Dave Patton, Feb 23, 2005
    #5
  6. Guest

    Thanks a bunch, got it!


    On Tue, 22 Feb 2005 20:28:05 -0500,
    wrote:

    >Hope this isn't too stupid but could someone tell me how to convert
    >"hddd,mm.mmm" to "hddd.ddddd"
    >Example: N39 01.151 x W76 .45.856
    >I'm new to all GPS.
    >Thanks
     
    , Feb 23, 2005
    #6
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