Convert Garmin GPS track to Google map Polyline

Convert Garmin GPS track to Google map Polyline

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Brief: To download a GPS Track and points from a Garmin GPS unit and create a Googlemaps Polyline/Encoded Polyline.

The process is straightforward if you follow the following steps:

1) Download from GPS.
2) Convert files to csv format.
2) Convert csv to Polyline.

Garmin EtreX GPS unit.
Serial port adapter.

1) Download from GPS.
Software: OziExplorer.

Visit and download OziExplorer software.

Connect GPS unit to desktops’ serial port. Ensure GPS Setup/Interface is set GARMIN.

From the OziExplorer Trial version.

  • File/Load from File/Load Map File/
  • Garmin/Get Track from GPS

Once the waypoints are downloaded.

  • Save/Save to File/Save Track to File

2) Convert to CSV
Software: GPS BABEL

Set the following:

  • Type of GPS data you want to convert: TRACK
  • Input file format: OziExplorer[W][T][R]
  • Output format: Comma seperated values [W]

Upload your file.

The conversion will display as a web page. You will need to save this as a csv.

  • Open Notepad
  • View source – CTRL+A/CTRL+C/CTRL+V from Webpage to Notepad.
  • File/Save As

3) Create Polyline
Software: GPS Visualiser

  • Make a Map: Google Map
  • File #1: Select the file you have just converted.
  • Force points to be this type: Trackpoints

Draw the Map.

3 thoughts on “Convert Garmin GPS track to Google map Polyline

  1. Nessie a painting found unpublished by M.C.Escher ( 1898-1972)Holland.-

    There is who says the painting of M.C.Escher 1898-1972 is authentic, to
    Summon with consideration and respect towards a jurywoman who works
    At the court of ROME, done by a professional ,famous and respected
    The Dott.Anna PETRECCHIA ,dated august 04-2006.
    The expert report is made of 51 pages that proofs the authenticity of
    Works of art,with the opinion of art experts, tv and stamped papers
    that represents
    NESSIE the Monster Of Loch Ness that appears from under the water of
    the lake
    With the sound of a flute, played by a black man without a face.
    ( in my opinion a monster that calls another monster ).-
    Local TV and newspapers have brought this notice in several occasions.

    The M.C.escher Foundation of Baarn Holand say their consideration:

    This is to let you know that M.C.Escher NEVER HAVE MADE a
    Painting and the mentioned paining of Loch Nes is fake.
    You should rectify this message. It is absolutely nonsense.
    For years this people are trying to get a certificate,but
    The never will get, because it is a forgery.
    M.C.escher Foundation.

    Has far has we know from informations, uptil now the M.C.Escher
    Neither the handwriting, the date 18.1.1949, the dedication, the
    signature and
    The registration number behind the painting.
    Even though, the M.C.Escher Foundation say such a thing,
    NOT EVEN EXAMINATING ( neither by their own experts )
    We will wait for a proofing certificate that this art is really a fake
    so we can
    Spread it all over the world.
    Uptil then the painting is the ORIGINAL.-

    Youth Club Association- Volturara
    Giovanni Palatucci
    Monthly Information

    The Volturarese Newspaper, after the discovery of the unpublished
    Picture, Which is
    Volturara Irpina ( AV ) article, after being transmitted by the BBC
    program and the
    Italian mass media about the new appearance of the Monster of Loch Ness
    ( Scotland)
    Necessary needs to inform the whole world that the Holland Painter and
    M.C.Escher had already painted and announced the new reappearance,
    recalled by the
    Black Man without a Face.
    And with what has been written above, with peaceful intentions:
    1) either Escher had seen personally the monster of Loch Ness while he
    was wandering
    2) or Escher believed that the monster of Loch Ness really existed and
    thats why he
    did the drawing.
    This work of art is dated 01.18.1949.
    The Handwriting consultation is made of 51 pages and has been sworn and
    registered at
    The Court of R O M E in the date of august 4 .2006. This is a big
    discovery for the
    World of art. The Republic power of Attorney,of Avellino is
    even occupying about
    This case, interested has for the Policeman who is the owner of this
    Picture. Holland denies
    The existence of this unpublished Picture without seeing it or
    examining it .
    Honour and glory to Escher, the Loch Ness Monster,to everybody Irpine
    and the national
    And international Mass media that will publish this HISTORICAL EVENT.
    The Association President
    Michelangelo MARRA
    Internet :

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