GPS Position Formats the Basics

Discussion in 'GPS Navigation' started by Tweedie, Apr 9, 2016.

  1. Tweedie

    Tweedie Funster

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    Help am a new user to Sat Nav (Garmin Camper 760), planning first journey. Trying to get my head around the basics of coordinate format. How do you know which one to use for example: Caen Ferry Terminal is shown on their site as 49.284013,-0.249698. What Coordinate would I select for this in the position format menu. Am a map person so this is all very new to me, expect it is simple to understand really. Thanks in advance oh wise ones(y)
     
  2. laser101uk

    laser101uk Funster

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  3. Tweedie

    Tweedie Funster

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  4. GJH

    GJH Funster Life Member

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    Select Where To/Coordinates/Spanner symbol and select the Format h ddd.ddddd.

    Then type N 49.284013 in the top box and W0.249698

    That works for the UK anyway :)
     
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  5. Tweedie

    Tweedie Funster

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    Thanks just trying to understand when/where you would use the different format settings.
     
  6. John Laidler

    John Laidler Funster

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    Just set the format on the device to whatever format you have co-ords to enter. Don't waste time converting them, it isn't necessary unless your satnav won't accept the required format, which I think is unlikely with a Garmin.

    My Garmin has three options which you access on mine by selecting format after choosing co-ords from the Where To menu.

    The options are

    h ddd mm' ss.s which is degrees minutes seconds
    h ddd mm.mmm' which is degrees decimal minutes
    h ddd.ddddd' which is decimal degrees.

    Examples of all three are:

    W3° 24' 45"
    W3° 45.756'
    W3.25176°

    Where you can get caught out is the satnav will want N/S and E/W included. In the examples you give the first number needs N added where the h is in the formats above. Negative is West and this can catch you out in Spain for example where you will find locations using both E and W. All co-ords in Europe will be N.

    There is no "right" format to use, just use whatever type you have. All co-ords can be expressed in any of these formats. For example all three of these will take you to the same place. (north coord only given)

    N4° 30' 00"
    N4° 30.00'
    N4.500°
     
    Last edited: Apr 9, 2016
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  7. GJH

    GJH Funster Life Member

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    I think the different formats are provided simply because different places give their positions using different formats so it saves you having to convert.

    If I want to convert coordinates when I'm sat at the PC I use http://www.nearby.org.uk/conversions.cgi

    I haven't got an app installed on my phone so will investigate the one that @laser101uk posted
     
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